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## What is the biggest factor that two numbers have in common?

The greatest common factor (GCF) of a set of numbers is the largest factor that all the numbers share. For example, 12, 20, and 24 have two common factors: 2 and 4. The largest is 4, so we say that the GCF of 12, 20, and 24 is 4. GCF is often used to find common denominators.

**What is the largest factor of 21?**

Factors of 21 are integers that can be divided evenly into 21. It has a total of 4 factors of which 21 is the biggest factor and the positive factors of 21 are 1, 3, 7, and 21. The sum of all factors of 21 is 32 and its factors in Pairs are (1, 21) and (3, 7).

### What is the biggest factor of 42?

The factors of 42 are 1, 2, 3, 6, 7, 14, 21 and 42. The factors of 41 are 1 and 41. As the number 41 is a prime number, the common factor of 42 and 41 is 1.

**What is the biggest factor of 20?**

Factors of 20 are the list of integers that can be evenly divided into 20. It has a total of 6 factors of which 20 is the biggest factor and the positive factors of 20 are 1, 2, 4, 5, 10, and 20.

#### What are the smallest and largest factors of 21?

These factors are 1, 3, 7 and 21. Factor pairs of the number 21 are the whole numbers which could be either positive or negative but not a fraction or decimal number.

**What are some common factors of 42?**

FAQs on Factors of 42 The factors of 42 are 1, 2, 3, 6, 7, 14, 21, and 42.

## Which is smallest factor of 21?

The factors of 21 are 1, 3, 7 and 21. Factor pairs of the number 21 are the numbers that result in the original number multiplying them together.

**Are there any factors other than the number 42?**

As the number 42 is a composite number, it has many factors other than one and the number itself. The factors of 42 can be positive or negative, but it cannot be in decimal or fraction form. Therefore, the factors of 42 are 1, 2, 3, 6, 7, 14, 21 and 42.

### Which is the greatest common factor for 12 and 42?

The Greatest Common Factor (GCF) for 12 and 42, notation CGF (12,42), is 6.

**Which is the greatest common factor of 18, 21?**

Let us consider the example given below: For example – The GCF of 18, 21 is 3. Because the factors of the number 18 and 21 are: Here, the number 3 is common in both the factors of numbers. Hence, the greatest common factor of 18 and 21 is 3. Similarly, the GCF of 10, 15 and 25 is 5.

#### Which is the largest common factor of 27, 54 and 81?

81. 1, 3, 9, 27, 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.