Greatest Common Factor of 21, 84, 27, 117

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

• Greatest Common Factor of 21, 84, 27, 117 by common division method
• Greatest Common Factor of 21, 84, 27, 117 with matching the biggest common factor

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

Factors of 21

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

1,3,7,21

Factors of 84

List of positive integer factors of 84 that divides 84 without a remainder.

1,2,3,4,6,7,12,14,21,28,42,84

Factors of 27

List of positive integer factors of 27 that divides 27 without a remainder.

1,3,9,27

Factors of 117

List of positive integer factors of 117 that divides 117 without a remainder.

1,3,9,13,39,117

Greatest Common Factor

We found the factors 21,84,27,117 . The biggest common factor number is the GCF number.
So the greatest common factor 21,84,27,117 is 3.

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

• GCF of 31, 73, 44, 158
• GCF of 10, 26, 30, 941
• GCF of 17, 64, 81, 178
• GCF of 23, 61, 55, 356
• GCF of 93, 39, 62, 405

1. What is the GCF of 21, 84, 27, 117?

Answer: GCF of 21, 84, 27, 117 is 3.

2. How to Find the GCF of 21, 84, 27, 117

Answer: Greatest Common Factor(GCF) of 21, 84, 27, 117 = 3

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

Step 2: Then multiply all the prime factors GCF(21, 84, 27, 117) = 3.