Greatest Common Factor of 831, 564, 21

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

• Greatest Common Factor of 831, 564, 21 by common division method
• Greatest Common Factor of 831, 564, 21 with matching the biggest common factor

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∴ So the GCF of the given numbers is 3 = 3

Factors of 831

List of positive integer factors of 831 that divides 831 without a remainder.

1,3,277,831

Factors of 564

List of positive integer factors of 564 that divides 564 without a remainder.

1,2,3,4,6,12,47,94,141,188,282,564

Factors of 21

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

1,3,7,21

Greatest Common Factor

We found the factors 831,564,21 . The biggest common factor number is the GCF number.
So the greatest common factor 831,564,21 is 3.

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

• GCF of 504, 140, 34
• GCF of 181, 298, 84
• GCF of 674, 299, 19
• GCF of 579, 900, 65
• GCF of 445, 194, 44

1. What is the GCF of 831, 564, 21?

Answer: GCF of 831, 564, 21 is 3.

2. How to Find the GCF of 831, 564, 21

Answer: Greatest Common Factor(GCF) of 831, 564, 21 = 3

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

Step 2: Then multiply all the prime factors GCF(831, 564, 21) = 3.