Greatest Common Factor of 12, 20, 10, 649

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

• Greatest Common Factor of 12, 20, 10, 649 by common division method
• Greatest Common Factor of 12, 20, 10, 649 with matching the biggest common factor

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∴ GCF of numbers is 1 because of no common factors present between them.

Factors of 12

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

1,2,3,4,6,12

Factors of 20

List of positive integer factors of 20 that divides 20 without a remainder.

1,2,4,5,10,20

Factors of 10

List of positive integer factors of 10 that divides 10 without a remainder.

1,2,5,10

Factors of 649

List of positive integer factors of 649 that divides 649 without a remainder.

1,11,59,649

Greatest Common Factor

We found the factors 12,20,10,649 . The biggest common factor number is the GCF number.
So the greatest common factor 12,20,10,649 is 1.

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

• GCF of 70, 58, 93, 231
• GCF of 57, 92, 69, 997
• GCF of 30, 75, 19, 800
• GCF of 34, 89, 49, 864
• GCF of 99, 13, 24, 425

1. What is the GCF of 12, 20, 10, 649?

Answer: GCF of 12, 20, 10, 649 is 1.

2. How to Find the GCF of 12, 20, 10, 649

Answer: Greatest Common Factor(GCF) of 12, 20, 10, 649 = 1

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

Step 2: Then multiply all the prime factors GCF(12, 20, 10, 649) = 1.