Best Answer

The common factors of 27 and 45 are 1, 3, and 9.

The greatest common factor of 27 and 45 is 9.

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 27 are 1, 3, 9, and 27.

The factors of 45 are 1, 3, 5, 9, 15, and 45.

The common factors are 1,3, and 9. Therefore, the greatest common factor is 9.

The greatest common factor can also be calculated by identifying the common prime factors and multiplying them together. To then obtain the common factors, list all the factors of the greatest common factor.

The prime factors of 27 are 3, 3, and 3.

The prime factors of 45 are 3, 3, and 5.

The prime factors in common are 3 and 3, so the greatest common factor is 3 x 3 = 9.

Q: What are the common factors of 27 and 45?

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To figure this out you should first express the numbers as the product of their prime factors: 27 = 3x3x3 45 = 3x3x5 The next step is to identify any common prime factors. Both numbers have two 3s as prime factors. Multiply these together and you get: 3x3 = 9 Thus 9 is the HCF of 27 and 45.

Common factors of 15, 35, and 45 are: 1 and 5.

The common factors of 45 and 90 are 1,3,5

The Least Common Multiple (LCM) for 27 36 45 is 540.

The common factors of 36 and 27 are 1, 3 & 9; the highest common factor is 9.

Related questions

25, 27, and 45 share no common factors aside from 1.

Factors of 27: 1, 3, 9, 27. Factors of 45: 1, 3, 5, 9, 15, 45. As shown above, the common factors are 1, 3, 9.

1,3,9

The factors of 27 are: 1, 3, 9, 27 The factors of 45 are: 1, 3, 5, 9, 15, 45 The common factors are: 1, 3, 9 The Greatest Common Factor: GCF = 9

Factors for 27: 1, 3, 9, 27 Factors for 45: 1, 3, 5, 9, 15, 45 Factors for 99: 1, 3, 9, 11, 33, 99 Common Factors: 1, 3, 9

1, 3, 9

The common factors are: 1, 3, 9

1, 3 and 9

1, 3 and 9

1, 3 and 9

No. Prime factors of 27: 3 3 3 Prime factors of 45: 3 3 5 Both have two factors of 3, so the greatest common factor is 9.

1,3,9 -------- 45 = 9 x 5 27 = 9 x 3 Hence the common factor is 9. That too the highest common factor.