Greatest Common Factor of 644, 340, 30

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

• Greatest Common Factor of 644, 340, 30 by common division method
• Greatest Common Factor of 644, 340, 30 with matching the biggest common factor

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

Factors of 644

List of positive integer factors of 644 that divides 644 without a remainder.

1,2,4,7,14,23,28,46,92,161,322,644

Factors of 340

List of positive integer factors of 340 that divides 340 without a remainder.

1,2,4,5,10,17,20,34,68,85,170,340

Factors of 30

List of positive integer factors of 30 that divides 30 without a remainder.

1,2,3,5,6,10,15,30

Greatest Common Factor

We found the factors 644,340,30 . The biggest common factor number is the GCF number.
So the greatest common factor 644,340,30 is 2.

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

• GCF of 840, 944, 73
• GCF of 337, 849, 72
• GCF of 702, 932, 13
• GCF of 217, 798, 89
• GCF of 290, 291, 97

1. What is the GCF of 644, 340, 30?

Answer: GCF of 644, 340, 30 is 2.

2. How to Find the GCF of 644, 340, 30

Answer: Greatest Common Factor(GCF) of 644, 340, 30 = 2

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

Step 2: Then multiply all the prime factors GCF(644, 340, 30) = 2.