Greatest Common Factor of 84, 72, 42, 70

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

• Greatest Common Factor of 84, 72, 42, 70 by common division method
• Greatest Common Factor of 84, 72, 42, 70 with matching the biggest common factor

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∴ So the GCF of the given numbers is 2 = 2

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 72

List of positive integer factors of 72 that divides 72 without a remainder.

1,2,3,4,6,8,9,12,18,24,36,72

Factors of 42

List of positive integer factors of 42 that divides 42 without a remainder.

1,2,3,6,7,14,21,42

Factors of 70

List of positive integer factors of 70 that divides 70 without a remainder.

1,2,5,7,10,14,35,70

Greatest Common Factor

We found the factors 84,72,42,70 . The biggest common factor number is the GCF number.
So the greatest common factor 84,72,42,70 is 2.

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

• GCF of 72, 20, 46, 77
• GCF of 19, 30, 36, 34
• GCF of 59, 68, 36, 91
• GCF of 89, 67, 90, 99
• GCF of 63, 61, 38, 81

1. What is the GCF of 84, 72, 42, 70?

Answer: GCF of 84, 72, 42, 70 is 2.

2. How to Find the GCF of 84, 72, 42, 70

Answer: Greatest Common Factor(GCF) of 84, 72, 42, 70 = 2

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

Step 2: Then multiply all the prime factors GCF(84, 72, 42, 70) = 2.