Greatest Common Factor of 21, 76, 80, 975

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

• Greatest Common Factor of 21, 76, 80, 975 by common division method
• Greatest Common Factor of 21, 76, 80, 975 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 76

List of positive integer factors of 76 that divides 76 without a remainder.

1,2,4,19,38,76

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 975

List of positive integer factors of 975 that divides 975 without a remainder.

1,3,5,13,15,25,39,65,75,195,325,975

Greatest Common Factor

We found the factors 21,76,80,975 . The biggest common factor number is the GCF number.
So the greatest common factor 21,76,80,975 is 1.

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

• GCF of 90, 38, 84, 517
• GCF of 43, 74, 98, 544
• GCF of 82, 46, 92, 222
• GCF of 12, 89, 58, 525
• GCF of 67, 63, 56, 135

1. What is the GCF of 21, 76, 80, 975?

Answer: GCF of 21, 76, 80, 975 is 1.

2. How to Find the GCF of 21, 76, 80, 975

Answer: Greatest Common Factor(GCF) of 21, 76, 80, 975 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 76, 80, 975) = 1.