Factor Tree of 18

Given number is 18
The factor tree of 18 is as follows:

	18
2		9
	3		3

18 = 2 x 9

9 = 3 x 3

If we write into multiples it would be 18 x 2

On splitting 9 further and writing it as multiples of numbers it would be 3 x 3.

Here are examples of Factor tree calculations.

• Factor Tree of 19
• Factor Tree of 20
• Factor Tree of 21
• Factor Tree of 22
• Factor Tree of 23

Here we are providing different methods to find the factors of the number 18. They are splitting numbers and prime factors.

Splitting Numbers

We can divide the number into either of its two factors. In other words, we are looking for the numbers that when multiplied together eqaul 18. Let’s start with 2 x 3 x 3 as it results in 18 on multiplying. We will now find the factors or ancestors of split factors, just like in any family tree.

Prime Factors

Let’s take a look at 18 now and we can write as 2 x 3 x 3 and place those factors on the tree. similarly to prime numbers obtained in the first step 2, 3, 3 obtained here are also prime numbers and we will end up these branches.

1. What is factor tree for 18 ?

Answer: Prime Factors of 18 are 2 x 3 x 3.

2. What are the Prime Factors of 18 ?

Answer: Prime Factors of 18 are 2 x 3 x 3.