# Hacktivateed

19

## What are the factors of 54 and 16?

For 16 and 54 those factors look like this:

• Factors for 16: 1, 2, 4, 8, and 16.
• Factors for 54: 1, 2, 3, 6, 9, 18, 27, and 54.

### What are all the GCF of 54?

1, 2, 3, 6, 9, 18, 27, and 54. Although the numbers in bold are all common factors of both 36 and 54, 18 is the greatest common factor. The second method to find the greatest common factor is to list the prime factors, then multiply the common prime factors.

#### What is the GCF between 18 and 54?

GCF of 18 and 54 by Prime Factorization As visible, 18 and 54 have common prime factors. Hence, the GCF of 18 and 54 is 2 × 3 × 3 = 18.

Do 15 and 54 have a GCF?

The GCF of 15 and 54 is 3.

What is the GCF of 30 and 25?

5
Answer: GCF of 25 and 30 is 5.

## What is the GCF of 36 54?

18
Answer: GCF of 36 and 54 is 18.

### What is the HCF of 18 54 and 81?

9
⇒ HCF(18, 54, 81) = 9.

#### What is the HCF of 18?

Factors of 18 = 1, 2, 3, 6, 9 and 18. Therefore, common factor of 12 and 18 = 1, 2, 3 and 6. Highest common factor (H.C.F) of 12 and 18 = 6 [since 6 is the highest common factor]. 6.

What is the GCF of 72 and 42?

6
The GCF of 42 and 72 is 6.

What is the GCF of 15 and 45?

15
Answer: GCF of 15 and 45 is 15.

## Which is the most common factor of 16?

The factors of 16 include: 1, 2, 4, 8, and 16. The factors of 12 include: 1, 2, 3, 4, 6, and 12. Thus, the common factors of 16 and 12 are: 1, 2, and 4. Often in math problems, it can be desirable to find the greatest common factor of some given numbers. In this case, the greatest common factor is 4.

### Which is the greatest factor of 27 54 81?

Each of the numbers can be divided by 1, 3, 9, and 27, so you can say that these numbers are common factors of the set of numbers 27, 54, and 81. The largest of the common factors is 27, so you can say that 27 is the greatest common factor of 27, 54, and 81. See the Factoring Calculator to learn more about finding the factors…

#### Which is the most common factor of 64?

The factors of 64 are: 1, 2, 4, 8, 16, 32, 64 The factors of 136 are: 1, 2, 4, 8, 17, 34, 68, 136 The common factors are: 1, 2, 4, 8 The Greatest Common Factor: GCF = 8

Which is the greatest common factor of 4?

In this case, the greatest common factor is 4. This calculator only accepts positive integers as input to calculate their common factors. While only two numbers are used in the above example, the calculator can compute the common factors of more than two numbers.