Greatest Common Factor of 21, 38, 31, 797

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

• Greatest Common Factor of 21, 38, 31, 797 by common division method
• Greatest Common Factor of 21, 38, 31, 797 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 38

List of positive integer factors of 38 that divides 38 without a remainder.

1,2,19,38

Factors of 31

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

1,31

Factors of 797

List of positive integer factors of 797 that divides 797 without a remainder.

1,797

Greatest Common Factor

We found the factors 21,38,31,797 . The biggest common factor number is the GCF number.
So the greatest common factor 21,38,31,797 is 1.

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

• GCF of 75, 48, 86, 259
• GCF of 91, 55, 87, 459
• GCF of 80, 50, 98, 632
• GCF of 36, 39, 60, 468
• GCF of 51, 58, 61, 134

1. What is the GCF of 21, 38, 31, 797?

Answer: GCF of 21, 38, 31, 797 is 1.

2. How to Find the GCF of 21, 38, 31, 797

Answer: Greatest Common Factor(GCF) of 21, 38, 31, 797 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 38, 31, 797) = 1.