Best Answer

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

The factors of 27 are: 1, 3, 9, 27.

The common factors are: 1, 3

More answers

1, 3, 7, 21

1, 3, 9, 27

Q: What are all the factors in 21 and 27?

Write your answer...

Submit

Still have questions?

Continue Learning about Movies & Television

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.

The factors of 27 are 1, 3, 9 & 27, while the factors of 125 are 1, 5, 25 & 125, thus the only common factor is 1

Since 21 is a factor of 63, all of its factors are common.

The factors of 189 are: 1 3 7 9 21 27 63 189

The factors of 189 are 1 3 7 9 21 27 63 189 So the largest factor is 189. However, 189 is not a proper factor, even though it is a factor. The largest proper factor is 63. Now 63 is not prime, since is is clearly divisible by 3. The largest prime factor is 7

Related questions

The factors of 21 are: 1, 3, 7, 21 The factors of 27 are: 1, 3, 9, 27

The factors of 27 are: 1, 3, 9, 27 The factors of 63 are: 1, 3, 7, 9, 21, 63

The factors of 18 are: 1, 2, 3, 6, 9, 18 The factors of 21 are: 1, 3, 7, 21 The factors of 27 are: 1, 3, 9, 27

A prime number has exactly two factors, 1 and the number itself. The factors of 21 are 1, 3, 7, and 21, and the factors of 27 are 1, 3, 9, and 27. Since 21 and 27 have more than 2 factors, they are composite numbers.

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.

List the factors. The factors of 21 are: 1, 3, 7, 21 The factors of 24 are: 1, 2, 3, 4, 6, 8, 12, 24 The factors of 27 are: 1, 3, 9, 27 The common factors are: 1, 3 The Greatest Common Factor: GCF = 3

Common factors of 21 and 27 are: 1 and 3.

1, 3, 7, 9, 21, 27, 63, 189

The factors of 27 are: 1, 3, 9, 27 The factors of 609 are: 1, 3, 7, 21, 29, 87, 203, 609

Factors of 21: 1, 3, 7, 21Factors of 27: 1, 3, 9, 27GCF (21, 27) = 3

The factors of 27 are 1, 3, 9 & 27, while the factors of 125 are 1, 5, 25 & 125, thus the only common factor is 1

The greatest common factor of 21 and 27 is 3 because that is the highest number that goes into 21 and 27. To find the highest common factor of two numbers, you first have to break them down into their prime factors. In this case, the prime factors of 21 and 27 are: 21 = 3x7 27 = 3x3x3 The next step is to identify any common factors. In this case, the only common prime factor is 3. Thus, the highest common factor of 21 and 27 is 3.