Greatest Common Factor of 21, 87, 10, 679

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

• Greatest Common Factor of 21, 87, 10, 679 by common division method
• Greatest Common Factor of 21, 87, 10, 679 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 21

List of positive integer factors of 21 that divides 21 without a remainder.

1,3,7,21

Factors of 87

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

1,3,29,87

Factors of 10

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

1,2,5,10

Factors of 679

List of positive integer factors of 679 that divides 679 without a remainder.

1,7,97,679

Greatest Common Factor

We found the factors 21,87,10,679 . The biggest common factor number is the GCF number.
So the greatest common factor 21,87,10,679 is 1.

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

• GCF of 52, 96, 15, 493
• GCF of 42, 66, 82, 201
• GCF of 59, 93, 32, 216
• GCF of 79, 27, 22, 727
• GCF of 91, 80, 38, 127

1. What is the GCF of 21, 87, 10, 679?

Answer: GCF of 21, 87, 10, 679 is 1.

2. How to Find the GCF of 21, 87, 10, 679

Answer: Greatest Common Factor(GCF) of 21, 87, 10, 679 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 87, 10, 679) = 1.