Greatest Common Factor of 12, 10, 64, 80, 165

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

• Greatest Common Factor of 12, 10, 64, 80, 165 by common division method
• Greatest Common Factor of 12, 10, 64, 80, 165 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 10

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

1,2,5,10

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 80

List of positive integer factors of 80 that divides 80 without a remainder.

1,2,4,5,8,10,16,20,40,80

Factors of 165

List of positive integer factors of 165 that divides 165 without a remainder.

1,3,5,11,15,33,55,165

Greatest Common Factor

We found the factors 12,10,64,80,165 . The biggest common factor number is the GCF number.
So the greatest common factor 12,10,64,80,165 is 1.

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

• GCF of 77, 46, 94, 44, 441
• GCF of 22, 78, 25, 43, 158
• GCF of 63, 29, 66, 85, 691
• GCF of 47, 35, 41, 36, 439
• GCF of 68, 81, 64, 23, 415

1. What is the GCF of 12, 10, 64, 80, 165?

Answer: GCF of 12, 10, 64, 80, 165 is 1.

2. How to Find the GCF of 12, 10, 64, 80, 165

Answer: Greatest Common Factor(GCF) of 12, 10, 64, 80, 165 = 1

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

Step 2: Then multiply all the prime factors GCF(12, 10, 64, 80, 165) = 1.