Greatest Common Factor of 91, 20, 820

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

• Greatest Common Factor of 91, 20, 820 by common division method
• Greatest Common Factor of 91, 20, 820 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 91

List of positive integer factors of 91 that divides 91 without a remainder.

1,7,13,91

Factors of 20

List of positive integer factors of 20 that divides 20 without a remainder.

1,2,4,5,10,20

Factors of 820

List of positive integer factors of 820 that divides 820 without a remainder.

1,2,4,5,10,20,41,82,164,205,410,820

Greatest Common Factor

We found the factors 91,20,820 . The biggest common factor number is the GCF number.
So the greatest common factor 91,20,820 is 1.

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

• GCF of 87, 89, 608
• GCF of 92, 83, 941
• GCF of 93, 81, 923
• GCF of 17, 98, 677
• GCF of 60, 22, 776

1. What is the GCF of 91, 20, 820?

Answer: GCF of 91, 20, 820 is 1.

2. How to Find the GCF of 91, 20, 820

Answer: Greatest Common Factor(GCF) of 91, 20, 820 = 1

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

Step 2: Then multiply all the prime factors GCF(91, 20, 820) = 1.