Greatest Common Factor of 21, 87, 676, 196

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

• Greatest Common Factor of 21, 87, 676, 196 by common division method
• Greatest Common Factor of 21, 87, 676, 196 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 676

List of positive integer factors of 676 that divides 676 without a remainder.

1,2,4,13,26,52,169,338,676

Factors of 196

List of positive integer factors of 196 that divides 196 without a remainder.

1,2,4,7,14,28,49,98,196

Greatest Common Factor

We found the factors 21,87,676,196 . The biggest common factor number is the GCF number.
So the greatest common factor 21,87,676,196 is 1.

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

• GCF of 74, 88, 396, 155
• GCF of 28, 19, 872, 360
• GCF of 81, 74, 314, 795
• GCF of 67, 47, 965, 390
• GCF of 73, 64, 451, 776

1. What is the GCF of 21, 87, 676, 196?

Answer: GCF of 21, 87, 676, 196 is 1.

2. How to Find the GCF of 21, 87, 676, 196

Answer: Greatest Common Factor(GCF) of 21, 87, 676, 196 = 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, 676, 196) = 1.