**Find the prime factorization of 20**

**Step 1:**

Check if number is divisible by 2

Here 20 is divisible by 2 and gives number 10

**Step 2:**

Check if number 10 is divisible by 2 –> YES

Here 10 is divisible by and gives number 5

**Step 3**:

Number 5 is divisible by 5 and gives number 1

**PRIME FACTORS**

The number 20 = 2 * 2 * 5 are the product of prime factors.

**INDIVIDUAL FACTORS**

If you want to know individual factors you can write can do following manipulations

a. first 1 and 20 are definitely the factors of 20

b. we can find other factors by choosing combinations of other prime factors.

**Hence the factors of 21 are****1, 2, 4, 5, 10 , 20**