Is 20 a factor of 420?

Here we will show you two different methods you can use to determine if 20 is a factor of 420.

The first method entails simply listing all factors of 420 and then seeing if 20 is one of them. The factors of 420 are 1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, and 420. Looking at the list, you see that 20 is on the list, and the answer to "Is 20 a factor of 420?" is therefore yes.

For the second and perhaps easier method, we divide 420 by 20 to see if the quotient is a whole number or fractional number. If the quotient is a whole number, then 20 is a factor of 420. If the quotient is a fractional number, then 20 is not a factor of 420.

420 divided by 20 is 21 which is a whole number. Thus, once again, the answer to "Is 20 a factor of 420?" is yes.

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