Factors of 16 are 1, 2, 4, 8, and 16.

We can find factors of 16 using the multiplication method, division method, prime factorization, or factor pairs. Factors of 16 are the numbers that divide 16 exactly without leaving a remainder.

In this article, we will learn about “Factors of 16”, a list of factors of 16, the factor tree of 16, prime factors of 16, and some solved examples based on it.

What are Factors?

Numbers that can divide another number without producing additional numbers are known as factors.

For example, the factor of 12 are 1, 2, 3, 4, 6 and 12

What are Factors of 16?

16 has 5 factors 1, 2, 4, 8, and 16.

All the integers that divides by 16, without leaving any remainder are known as factors of 16. So, for this, we look at some examples.

• 1 × 16 = 16
• 4 × 4 = 16
• 2 × 8 = 16

So factors of 16 are 1, 2, 4 and 8.

List of All Factors of 16

The list of 16 factors is as follows:

Factors of 16 are 1, 2, 4, 8, and 16.

Prime Factors of 16

To obtain the prime factor of 16, here 16 is a composite number that has more than two factors. we must divide 16 by each prime number until we get the one. So, let’s see the factors of 16 that start with the smallest prime number 2.

• 16 ÷ 2 = 8
• 8 ÷ 4 = 2
• 4 ÷ 2 = 2
• 2 ÷ 2 = 1

So, prime factors of 16 are 2 × 2 × 2 × 2 or 2⁴

How to Find Factors of 16?

To determine the factors of 16, various methods will be used such as division, multiplication, and prime factorization. So, let’s look at the factors of 16.

Factors of 16 by Division Method

Using the division method, you divide 16 by the lowest prime numbers to begin finding the factors of 16, and you keep going until you run out of the last prime numbers in the factors of 16.

• 16 ÷ 1 = 16
• 16 ÷ 2 = 8
• 16 ÷ 4 = 4
• 16 ÷ 8 = 2
• 16 ÷ 16 = 1

Thus, factors of 16 are, 1, 2, 4, 8, and 16

Factors of 16 by Multiplication Method

Using the multiplication method, you can pair up the factors and multiply them to obtain the original number (16) in order to find the factors of 16. So, Let’s see the multiple pairs to get 16.

• 1 × 16 = 16
• 2 × 8 = 16
• 4 × 4 = 16

So, the pairs are (1, 16), (2, 8), and (4, 4) which are obtained by the multiplication method.

Prime Factorization of 16

The prime factorization of 16 is expressed below in the following points;

• Start with the number 16.
• Divide it by 2, which is the smallest prime number.
• Until the outcome is no longer an even integer, keep dividing by 2.

So, At final we get the prime factor of 16, that is 2 × 2 × 2 × 2 or 2⁴

Factor Tree of 16

Factor tree is a graphical method used to break down a number into its prime factors. It visually represents the step-by-step process of dividing the original number by its prime factors until all the remaining factors are prime numbers. The step-by-step process to determine the Factor Tree of 16 is given below:

First, we divide by two to obtain eight. We repeat this procedure twice more.

• Begins with the number 16.
• After that, Break 16 into 2 and 8
• Then, 2 will remain as it is, and 8 will be expanded into 2 and 4.
• At last, only 4 will be expanded into 2 and 2.

Factor tree for 16 is illustrated below:

Factor Pairs of 16

The integers that multiply together to create the initial number are known as factor pairs of 16. Even though, we will see them in positive pair factors and negative pair factors. So, Let’s look after the factor pairs for 16 that are given below:

Positive Factor Pair of 16

“Pair factors of Positive integers” can be found by multiplying the two integers in a pair by 16 to get the original number:

• 1 × 16 = 16
• 2 × 8 = 16
• 4 × 4 = 16

So, The positive pair factors of 16 are (1, 16), (2, 8), and (4, 4).

Negative Factor Pair of 16

“Pair factors of negative integers” can be found by multiplying the two integers in a pair by 16 to get the original number:

• -1 × -16 = 16
• -2 × -8 = 16
• -4 × -4 = 16

So, The negative pair factors of 16 are (-1, -16), (-2, -8), and (-4, -4).

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Factors of 16 – Solved Examples

Some examples of factor of 16 are,

Example 1: What is the sum of all the factors of 16?

Solution:

The factors of 16 are 1, 2, 4, 8, and 16.

Sum of the factors of 16 = 1 + 2 + 4 + 8 + 16

Sum of the factors of 16 = 31

Example 2: What are the common factors of 9 and 16?

Solution:

The common factor of given numbers 9 and 16 are given below;

9 = 1, 3, and 9

16 = 1, 2, 4, 8, and 16.

So, the common factors of 9 and 16 is only 1.

Example 3: Find the common factors of 64 and 16.

Solution:

The common factor of given numbers 64 and 16 are given below;

16 = 1, 2, 4, 8, and 16.

64 = 1, 2, 4, 8, 16, 32, and 64.

So, the common factors of 64 and 16 are 1, 2, 4, 8, and 16.

Example 4: Express 16 as the product of its prime factors.

Solution:

You can use prime factorization to express 16 as the product of its prime components.

As, 16 = 2 × 2 × 2 × 2

So, the prime factorization of 16 is 2⁴

Factors of 16 – Practice Questions

Various practice questions on factor of 16 are,

Q1: What is the product of the factors of 16?

Q2: Find the positive pair factors of 16.

Q3: What is the greatest common factor (GCF) of 16 and 24?

Q4: Is 3 a factor of 16?

Frequently Asked Questions on Factors of 16

What is Prime Factors of 16?

2 is the only prime factor of 16.

What is Factor Tree of 16?

The factor tree of 16 is 2 × 2 × 2 × 2.

Why 16 is not a Prime number?

16 is not a Prime number because it’s divisible by numbers other than 1 and itself.

What are Common Factors of 14 and 16?

The common factors of 14 and 16 are 1 and 2.

What are Common Factors of 16 and 20?

The common factors of 16 and 20 are 1, 2, 4.

Does 16 have only 3 factors?

No, 16 has five factors 1, 2, 4, 8, and 16.