Greatest Common Factor of 80, 87, 77, 646

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

• Greatest Common Factor of 80, 87, 77, 646 by common division method
• Greatest Common Factor of 80, 87, 77, 646 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 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 87

List of positive integer factors of 87 that divides 87 without a remainder.

1,3,29,87

Factors of 77

List of positive integer factors of 77 that divides 77 without a remainder.

1,7,11,77

Factors of 646

List of positive integer factors of 646 that divides 646 without a remainder.

1,2,17,19,34,38,323,646

Greatest Common Factor

We found the factors 80,87,77,646 . The biggest common factor number is the GCF number.
So the greatest common factor 80,87,77,646 is 1.

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

• GCF of 34, 91, 85, 795
• GCF of 71, 36, 10, 898
• GCF of 30, 79, 79, 228
• GCF of 29, 31, 52, 869
• GCF of 43, 94, 90, 616

1. What is the GCF of 80, 87, 77, 646?

Answer: GCF of 80, 87, 77, 646 is 1.

2. How to Find the GCF of 80, 87, 77, 646

Answer: Greatest Common Factor(GCF) of 80, 87, 77, 646 = 1

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

Step 2: Then multiply all the prime factors GCF(80, 87, 77, 646) = 1.