To find the factors of the number 12 you will have to find the two numbers which give a product of 12. This means that when you multiply 2 numbers they will give a product of 12.
So let us start with the process:
1×12=12
2 x 6 = 12
3 x 4 = 12
So you can see that the factors of 12 are 1, 2, 3, 4, 6, and 12.