Greatest Common Factor of 9, 80, 82, 21

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

• Greatest Common Factor of 9, 80, 82, 21 by common division method
• Greatest Common Factor of 9, 80, 82, 21 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 9

List of positive integer factors of 9 that divides 9 without a remainder.

1,3,9

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 82

List of positive integer factors of 82 that divides 82 without a remainder.

1,2,41,82

Factors of 21

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

1,3,7,21

Greatest Common Factor

We found the factors 9,80,82,21 . The biggest common factor number is the GCF number.
So the greatest common factor 9,80,82,21 is 1.

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

• GCF of 5, 71, 60, 66
• GCF of 2, 71, 91, 49
• GCF of 9, 76, 82, 30
• GCF of 9, 45, 87, 50
• GCF of 2, 35, 19, 63

1. What is the GCF of 9, 80, 82, 21?

Answer: GCF of 9, 80, 82, 21 is 1.

2. How to Find the GCF of 9, 80, 82, 21

Answer: Greatest Common Factor(GCF) of 9, 80, 82, 21 = 1

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

Step 2: Then multiply all the prime factors GCF(9, 80, 82, 21) = 1.