write all the factors of 40. use commas to separate them.

Explanation:

Step1: Start from 1

1 is a factor of every number. So 1 is a factor of 40.

Step2: Check 2

(40\div2 = 20), so 2 is a factor of 40.

Step3: Check 4

(40\div4=10), so 4 is a factor of 40.

Step4: Check 5

(40\div5 = 8), so 5 is a factor of 40.

Step5: Check 8

(40\div8=5), so 8 is a factor of 40.

Step6: Check 10

(40\div10 = 4), so 10 is a factor of 40.

Step7: Check 20

(40\div20=2), so 20 is a factor of 40.

Step8: Check 40

(40\div40 = 1), so 40 is a factor of 40.

Answer:

1, 2, 4, 5, 8, 10, 20, 40