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231 has 8 divisors.

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11y ago
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8y ago

They are 1, 3, 7, 21.

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7y ago

3 x 7 x 11

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Q: What is the divisors of 21?
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Related questions

What are the divisors of the number 21?

The divisors of 21 are: 1, 3, 7, 21.


What are the divisors of 147?

The divisors of 147 are 1, 3, 7, 21, 49, 147.


What are the divisors of 63?

The divisors of 63 are: 1, 3, 7, 9, 21, 63.


What are th divisors of 42?

The divisors of 42 are 1, 2, 3, 6, 7, 14, 21, 42.


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There are 8 divisors of 105 (viz: 1, 3, 5, 7, 15, 21, 35, 105)


What are the divisors of 126?

The divisors of 126 are: 1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126.


How many odd divisors does 756 have?

Eight. The odd divisors of 756 are: 1, 3, 7, 9, 21, 27, 63, 189.


What are the divisors of no 63?

1, 3, 7, 9, 21, 63.


What is the single-digit divisors of 3456?

The single-digit divisors of 3,456 are: 1, 2, 3, 4, 6, 8 and 9.


Why 21 is not a perfect number?

First, you want to know the definition of a perfect number: A perfect number is an integer which is equal to the sum of all its positive integer divisors that are less than itself. Example: The positive integer divisors of 6, less than 6, are 1, 2, and 3. The sum of those divisors is 1 + 2 + 3 = 6. Therefore, 6 is a perfect number. Now, 21 does not meet this definition and therefore is not a perfect number. Let's try it. There are three positive divisors of 21, namely, 1, 3, and 7, that are less than 21, itself. (There are no others.) But the sum of these divisors is 1 + 3 + 7 = 11, which is not equal to 21. Therefore, we confirm that 21 is not a perfect number.


What are the divisors of 42?

1, 2, 3, 6, 7, 14, 21, 42.


What are the divisors for 42?

1, 2, 3, 6, 7, 14, 21, 42.