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The factors of 21 are 1, 3, 7 and 21. To be common, they need to be compared to another set of factors.

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Q: What are common factors with a given number of 21?
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Related questions

What are the common factors number 21?

The factors of 21 are 1, 3, 7 and 21. For them to be common, they need to be compared to another set of factors.


What are the common factors of 42 and 63?

A factor is a divisor - a number that will evenly divide into another number. One way to determine the common factors and greatest common factor is to find all the factors of the numbers and compare them. The factors of 42 are 1, 2, 3, 6, 7, 14, 21, and 42. The factors of 63 are 1, 3, 7, 9, 21, and 63. The common factors are 1, 3, 7, and 21.


What number is a common factor of 42 and 21?

Since 21 is a factor of 42, all of its factors are common.


What is the greatest common factor of 8 21 and 75?

the greatest common factor of 8 21 and 75 is 1.


What are the first three common factors of 16 and 21?

16 and 21 only have one common factor, the number one.


What is the greatest common factor of 12 21 and 105?

Answer: 3Definition: A factor is a divisor - a number that will evenly divide into another number. The greatest common factor of two or more numbers is the largest factor that the numbers have in common.Method:One way to determine the common factors and greatest common factor is to find all the factors of the numbers and compare them.The factors of 12 are 1, 2, 3, 4, 6, and 12.The factors of 21 are 1, 3, 7, and 21.The factors of 105 are 1, 3, 5, 7, 15, 21, 35, and 105.The common factors are 1 and 3. Therefore, the greatest common factor is 3.


What are the common factors of 21 and 27?

A factor is a divisor - a number that will evenly divide into another number. One way to determine the common factors and greatest common factor is to find all the factors of the numbers and compare them. The factors of 21 are 1, 3, 7, and 21. The factors of 27 are 1, 3, 9, and 27. The common factors are 1 and 3. This means that the greatest common factor is 3.


What are the common factors and greatest common factor of 21?

There is neither a greatest common factor nor common factors of a single number, such as 21, because there cannot be any form of common factor without two or more numbers to compare. Common factors are factors that the numbers being compared have in common. The greatest common factor is the largest factor that all the numbers being compared have in common. Thus, since there are not two or more numbers to compare, there are neither common factors nor a greatest common factor. The factors of 21 are 1, 3, 7, and 21.


What are the prime factors of 21?

prime factor = prime number which can be divided into the given number with no remainder The prime factors of 21 are 3 and 7.


What is one number that is a factor of 12 and 21?

The common factors of 12 and 21 are 1 and 3.


What are the common factors of 21 and 63?

The common factors of 21 and 63 are 1, 3, 7, and 21


Is there a number that goes into 76 and 21?

Factors of 21... 1,3,7,21 Factors of 76... 1,2,4,19,38,76 Common factors to both numbers... 1


What number goes into 21 and 72?

The common factors are: 1, 3


What are the common factors of 21 42 and 84?

The common factors of 21 42 and 84 are 21


What number is a common factor of 21 and 42?

The factors of 21 are: 1, 3, 7, 21.The factors of 42 are: 1, 2, 3, 6, 7, 14, 21, 42.The common factors are: 1, 3, 7, 21


What are the common factors of 21?

The factors of 21 are 1, 3, 7 and 21. For them to be common, they need to be compared to another set of factors.


What are the common factors of 21 and 64?

Common factors of 21 and 64 are: 1.


What are the common factors of 21 and 42?

The common factors of 21 and 42 are 1,3,7,21


What are the common factors and greatest common factor of 21 and 42?

The common factors of 21 and 42 are 3, 7 and 21. The greatest common factor (GCF) is 21.


What number goes into 21 35 49?

The common factors are: 1, 7


Can 21 and 32 be divided by the same number?

The only factors they have in common is one.


What are the greatest common factors of 21?

The factors of 21 are 1, 3, 7, and 21. For them to be common, they need to be compared to another set of factors.


What can go into 10 and 21?

Other than the number 1, there are no positive integer common factors of 10 and 21.


What are the common factors of 21 and 51?

The common factors of 21 and 51 are: 1 and 3


What are the common factors of 30 21?

The common factors of 30 and 21 are 1 and 3.