Is 1 divisible by 21?

1 is divisible by 21 if the quotient of 1 divided by 21 is an integer. The quotient is the result you get when you divide one number by another. Furthermore, an integer is a whole number (not a fractional number).

Thus, to find out if 1 is divisible by 21, we simply calculate 1 divided by 21 and then determine if the answer (quotient) is an integer (whole number) or a fractional number.

1 / 21 = 0.047619048

As you can see above, the quotient of 1 divided by 21 is 0.047619048 and 0.047619048 is a fractional number. Therefore, 1 is not divisible by 21.

Q: Is 1 divisible by 21?
A: No

So now you know that 1 is not divisible by 21. Do you want to know all the numbers that 1 is divisible by? No problem. 1 is divisible by 1.

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