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If 21 is a factor of a number, then the factors of 21 must also be factors. So 3 and 7
Wiki User
∙ 12y ago
Wiki User
∙ 8y ago1, 3, 7, 21
Four of them.
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What are four common factors of 56 and 21?
There are only two common factors for 56 and 21. They are 1 and 7.
The number 21 has more tha two factors this maens it is a?
Composite is the opposite of prime which is a number with only two factors. 1 and itself.Composite has more than two factors so I guess a composite number is your answer.
Two equivalent factors of 21 over 42?
21 is a factor of both 21 and 42.
What are the factors of 21 and 53?
The factors of 21 are: 1, 3, 7, 21 The factors of 53 are: 1, 53
What are the 2 factors of 63?
The factors of 63 are 1, 3, 7, 9, 21, and 63. Pick two.
What are four common factors of 56 and 21?
There are only two common factors for 56 and 21. They are 1 and 7.
What are the first three common factors of 9 and 21?
9 and 21 only have two common factors: 1 and 3.
What are all the factors for 21?
3, 7, 21. 3x7 is the only equation that equals 21, and so these are the only factors of 21.
Which the the numbers 19 21 23 and 25 has the most factors?
The number 21 would be the answer. 19 and 23 only have two factors, 1 and themselves, as they are prime numbers. 25 only has 1, 25 and 5. 21 has 1, 21, 3 and 7 for 4 possible factors.
What are two factors of 21 that when added together equal 21?
The factors of 21 are 1, 3, 7 and 21. No two of them add up to 21.
If the product of two numbers is 21?
Aside from itself and 1, the only two factors of the number 21 are 7 and 3. Therefore, 7 x 3 = 21.
What are ten factors of 21?
It has only four factors and they are: 1, 3, 7 and 21
Is there a prime number that is a multiple of 21?
No, it is not possible. Every multiple of 21 is a composite number. 21 is a composite number and its factors are 1, 3, 7 and 21(4 factors). Any multiple of 21 must have all the factors of 21. So, every multiple of 21 has at least 4 factors. And a prime number has only two factors so, any multiple of 21 can't be prime.
The number 21 has more tha two factors this maens it is a?
Composite is the opposite of prime which is a number with only two factors. 1 and itself.Composite has more than two factors so I guess a composite number is your answer.
What are the factors of 7 and 21?
The factors of 7 are 1 and 7. The factors of 21 are 1, 3, 7, and 21. The only numbers that are factors of BOTH 7 and 21 are 1 and 7.
Is 21 a prime or composite number?
21 is a Composite Number. A prime number is a whole number that only has two factors which are itself and one. A composite number has factors in addition to one and itself. 21 is divisible by 3 and 7.
What are two factors of 21 with a difference of 2?
The factors of 21 are 1, 3, 7, and 21. 3 - 1 = 2
