Greatest Common Factor of 45, 39, 84, 138

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

• Greatest Common Factor of 45, 39, 84, 138 by common division method
• Greatest Common Factor of 45, 39, 84, 138 with matching the biggest common factor

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

Factors of 45

List of positive integer factors of 45 that divides 45 without a remainder.

1,3,5,9,15,45

Factors of 39

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

1,3,13,39

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 138

List of positive integer factors of 138 that divides 138 without a remainder.

1,2,3,6,23,46,69,138

Greatest Common Factor

We found the factors 45,39,84,138 . The biggest common factor number is the GCF number.
So the greatest common factor 45,39,84,138 is 3.

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

• GCF of 88, 23, 61, 935
• GCF of 69, 48, 41, 630
• GCF of 55, 25, 14, 642
• GCF of 30, 71, 70, 639
• GCF of 40, 99, 78, 237

1. What is the GCF of 45, 39, 84, 138?

Answer: GCF of 45, 39, 84, 138 is 3.

2. How to Find the GCF of 45, 39, 84, 138

Answer: Greatest Common Factor(GCF) of 45, 39, 84, 138 = 3

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

Step 2: Then multiply all the prime factors GCF(45, 39, 84, 138) = 3.