Greatest Common Factor of 82, 51, 21, 57

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

• Greatest Common Factor of 82, 51, 21, 57 by common division method
• Greatest Common Factor of 82, 51, 21, 57 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 82

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

1,2,41,82

Factors of 51

List of positive integer factors of 51 that divides 51 without a remainder.

1,3,17,51

Factors of 21

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

1,3,7,21

Factors of 57

List of positive integer factors of 57 that divides 57 without a remainder.

1,3,19,57

Greatest Common Factor

We found the factors 82,51,21,57 . The biggest common factor number is the GCF number.
So the greatest common factor 82,51,21,57 is 1.

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

• GCF of 36, 88, 39, 45
• GCF of 82, 90, 26, 46
• GCF of 68, 44, 16, 92
• GCF of 79, 96, 95, 29
• GCF of 36, 89, 57, 21

1. What is the GCF of 82, 51, 21, 57?

Answer: GCF of 82, 51, 21, 57 is 1.

2. How to Find the GCF of 82, 51, 21, 57

Answer: Greatest Common Factor(GCF) of 82, 51, 21, 57 = 1

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

Step 2: Then multiply all the prime factors GCF(82, 51, 21, 57) = 1.