Greatest Common Factor of 12, 18, 64, 620

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

• Greatest Common Factor of 12, 18, 64, 620 by common division method
• Greatest Common Factor of 12, 18, 64, 620 with matching the biggest common factor

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

Factors of 12

List of positive integer factors of 12 that divides 12 without a remainder.

1,2,3,4,6,12

Factors of 18

List of positive integer factors of 18 that divides 18 without a remainder.

1,2,3,6,9,18

Factors of 64

List of positive integer factors of 64 that divides 64 without a remainder.

1,2,4,8,16,32,64

Factors of 620

List of positive integer factors of 620 that divides 620 without a remainder.

1,2,4,5,10,20,31,62,124,155,310,620

Greatest Common Factor

We found the factors 12,18,64,620 . The biggest common factor number is the GCF number.
So the greatest common factor 12,18,64,620 is 2.

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

• GCF of 17, 65, 30, 457
• GCF of 20, 31, 45, 952
• GCF of 22, 27, 85, 854
• GCF of 83, 91, 41, 734
• GCF of 10, 69, 60, 745

1. What is the GCF of 12, 18, 64, 620?

Answer: GCF of 12, 18, 64, 620 is 2.

2. How to Find the GCF of 12, 18, 64, 620

Answer: Greatest Common Factor(GCF) of 12, 18, 64, 620 = 2

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

Step 2: Then multiply all the prime factors GCF(12, 18, 64, 620) = 2.