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Factors are those numbers which can be evenly divided into a number.

The factors of 21 would be 1, 3, 7, 21

The factors of 28 would be 1, 2, 4, 7, 14, 28

The factors of 15 would be 1, 3, 5, 15

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Q: What are the factors of 21 28 and 15?
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Related questions

Factors of 15 28 21 and 35?

15: 1,3,5,15 28: 1,2,4,7,14,28 21: 1,3,7,21 35: 1,5,7,35


What is the least common denominator of 28 21 15?

So with 3 fractions with denominators of 28 21 and 15: 28 = 7 x 4, 21 = 7 x 3, and 15 = 5 x 3. 28 and 21 have 7 in common; 21 and 15 have 3 in common, so those factors are used once: 7 x 4 x 3 x 5 = 420


What are the factors and prime factors of 15 and 21?

The factors of 15 are: 1, 3, 5, and 15.The prime factors of 15 are: 3 and 5.The factors of 21 are: 1, 3, 7, and 21.The prime factors of 21 are: 3 and 7.


What are the numbers between 15 and 30 that have 7 as their GCF?

The factors of 21 are 1 x 3 x 7 x 21.The factors of 28 are 1 x 2 x 4 x 7 x 14 x 28.The GCF of 21 and 28 is 7.


What is the greatest common factor of 28 and 15?

The GCF of 15 and 28 is 1. The factors of 15 are 1, 3, 5, and 15 The factors of 28 are 1, 2, 4, 7, 14, and 28 So the GCF of 15 and 28 is 1


What are the factors of 84 and 105?

Factors for 84 are {1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84} Factors for 105 are {1, 3, 5, 7, 15, 21, 35, 105} Greatest common factor of 84 and 105 is 21


What are the factors of 15 21 and 33?

The factors of 15 are: 1, 3, 5, 15 The factors of 21 are: 1, 3, 7, 21 The factors of 33 are: 1, 3, 11, 33


What are the factors of 28 42 and 30?

The factors of 28 are: 1, 2, 4, 7, 14, 28 The factors of 30 are: 1, 2, 3, 5, 6, 10, 15, 30 The factors of 42 are: 1, 2, 3, 6, 7, 14, 21, 42


What is the greatest common factor of 15 21 and 28?

The Greatest Common Factor of 15, 21, 28: 1


What are the factors 84 and 105?

The factors of 84 are: 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84 The factors of 105 are: 1, 3, 5, 7, 15, 21, 35, 105


What are the factors for 15 and 21?

The factors of 21 are: 1, 3, 7, 21 The factors of 23 are: 1, 23


What are the common factors of 15 and 21?

The factors of 15 are 3 and 5. The factors of 21 are 3 and 7. So the common factor is 3.