Best Answer

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.

Study guides

☆☆

Q: What are the greatest common factors of 21?

Write your answer...

Submit

Still have questions?

Related questions

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

The greatest common factor is 3

The greatest common factor of 63 and 147 is 21.

The common factors are 1 and 7. The GCF is 7.

The factors of 14 and 21 are: 14: 1,2,7,14 21:1,3,7,21 The common factors are:1 and 7. Therefore 7 is the greatest common factor (GCF)

The greatest common factor of 15 and 21 is 3The factors of 15 are: 1, 3, 5, 15The factors of 21 are: 1, 3, 7, 21The common factors are: 1, 3The Greatest Common Factor (GCF) is: 3

The Greatest Common Factor (GCF) is: 7

The Greatest Common Factor (GCF) is: 7

The Greatest Common Factor (GCF) is: 3

The Greatest Common Factor (GCF) is: 1

The factors of 14 are: 1, 2, 7, 14.The factors of 21 are: 1, 3, 7, 21.The Greatest Common Factor (GCF) is: 7.

The factors of 21 are:1, 3, 7, 21The factors of 49 are:1, 7, 49The common factors are: 1, 7The Greatest Common Factor (GCF) is: 7