Greatest Common Factor of 21, 72, 76, 31

Greatest common factor or Greatest common divisor (GCD) can be calculated in two ways

• Greatest Common Factor of 21, 72, 76, 31 by common division method
• Greatest Common Factor of 21, 72, 76, 31 with matching the biggest common factor

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∴ GCF of numbers is 1 because of no common factors present between them.

Factors of 21

List of positive integer factors of 21 that divides 21 without a remainder.

1,3,7,21

Factors of 72

List of positive integer factors of 72 that divides 72 without a remainder.

1,2,3,4,6,8,9,12,18,24,36,72

Factors of 76

List of positive integer factors of 76 that divides 76 without a remainder.

1,2,4,19,38,76

Factors of 31

List of positive integer factors of 31 that divides 31 without a remainder.

1,31

Greatest Common Factor

We found the factors 21,72,76,31 . The biggest common factor number is the GCF number.
So the greatest common factor 21,72,76,31 is 1.

Here are some samples of GCF of two or more Numbers calculations.

• GCF of 68, 12, 16, 56
• GCF of 17, 52, 94, 11
• GCF of 85, 82, 76, 66
• GCF of 14, 90, 18, 22
• GCF of 51, 66, 86, 98

1. What is the GCF of 21, 72, 76, 31?

Answer: GCF of 21, 72, 76, 31 is 1.

2. How to Find the GCF of 21, 72, 76, 31

Answer: Greatest Common Factor(GCF) of 21, 72, 76, 31 = 1

Step 1: Divide all the numbers with common prime numbers having remainder zero.

Step 2: Then multiply all the prime factors GCF(21, 72, 76, 31) = 1.