To find the factors of the number 72 you will have to find the two numbers which give a product of 72. This means that when you multiply 2 numbers they will give a product of 72. So let us start with the process:

1×72=72

2×36=72

3×24=72

4×18=72

6x 12=72

8x 9 = 72

So you can see that the factors of 72 are 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36 and 72.