Greatest Common Factor of 21, 31, 87, 957

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

• Greatest Common Factor of 21, 31, 87, 957 by common division method
• Greatest Common Factor of 21, 31, 87, 957 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 31

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

1,31

Factors of 87

List of positive integer factors of 87 that divides 87 without a remainder.

1,3,29,87

Factors of 957

List of positive integer factors of 957 that divides 957 without a remainder.

1,3,11,29,33,87,319,957

Greatest Common Factor

We found the factors 21,31,87,957 . The biggest common factor number is the GCF number.
So the greatest common factor 21,31,87,957 is 1.

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

• GCF of 85, 94, 56, 393
• GCF of 71, 65, 53, 687
• GCF of 66, 48, 98, 659
• GCF of 74, 63, 22, 874
• GCF of 44, 90, 98, 519

1. What is the GCF of 21, 31, 87, 957?

Answer: GCF of 21, 31, 87, 957 is 1.

2. How to Find the GCF of 21, 31, 87, 957

Answer: Greatest Common Factor(GCF) of 21, 31, 87, 957 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 31, 87, 957) = 1.