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Q: What are the factors and prime factors of 21 and 36?

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The factors of 21 are 1, 3, 7, and 21. The factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, and 36. The factors they have in common are 1 and 3, the largest of which is 3, so 3 is the greatest common factor. Or, you can calculate the greatest common factor by looking at the prime factors. The prime factors of 21 are 3 and 7. The prime factors of 36 are 2, 2, 3, and 3. The prime factors they have in common are a single 3, so 3 is the greatest common factor.

To find this, you first need to split the numbers down into their prime factors. In this case you get: 21 = 3x7 36 = 2x2x3x3 The next step is to identify any common prime factors. In this case the only common prime factor is 3. Therefore the HCF of 21 and 36 is 3.

The Prime Factors of 36 are 2, 3

The sum of the prime factors of 36 is 5.

The prime factors of 21 are 3,7.

Prime factors of 54 are 2 and 3 Prime factors of 36 are 2 and 3

2 and 3 are the prime factors of 36. Of the factors of 36, 2 and 3 are the only prime numbers.

Prime factors of 36 are 2 and 3 Prime factors of 60 are 2, 3 and 5

The prime factors of 36 are: 2*2*3*3 =36. So there are only 4 prime factors at all.

The prime factors are: 2, 3

The prime factors of 36 are 2 and 3. Add them together.

It can be. 36 is relatively prime to 25. 36 is not relatively prime to 21.

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