Greatest Common Factor of 84, 21, 39, 189

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

• Greatest Common Factor of 84, 21, 39, 189 by common division method
• Greatest Common Factor of 84, 21, 39, 189 with matching the biggest common factor

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

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 21

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

1,3,7,21

Factors of 39

List of positive integer factors of 39 that divides 39 without a remainder.

1,3,13,39

Factors of 189

List of positive integer factors of 189 that divides 189 without a remainder.

1,3,7,9,21,27,63,189

Greatest Common Factor

We found the factors 84,21,39,189 . The biggest common factor number is the GCF number.
So the greatest common factor 84,21,39,189 is 3.

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

• GCF of 22, 54, 87, 753
• GCF of 51, 90, 38, 556
• GCF of 87, 55, 26, 424
• GCF of 69, 46, 31, 930
• GCF of 39, 50, 19, 618

1. What is the GCF of 84, 21, 39, 189?

Answer: GCF of 84, 21, 39, 189 is 3.

2. How to Find the GCF of 84, 21, 39, 189

Answer: Greatest Common Factor(GCF) of 84, 21, 39, 189 = 3

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

Step 2: Then multiply all the prime factors GCF(84, 21, 39, 189) = 3.