Is 21 divisible by 21?

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

21 / 21 = 1

As you can see above, the quotient of 21 divided by 21 is 1 and 1 is an integer. Therefore, 21 is divisible by 21.

Q: Is 21 divisible by 21?
A: Yes

So now you know that 21 is divisible by 21. Do you want to know all the numbers that 21 is divisible by? No problem. 21 is divisible by 1, 3, 7, and 21.

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