Greatest Common Factor of 88, 20, 21, 65

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

• Greatest Common Factor of 88, 20, 21, 65 by common division method
• Greatest Common Factor of 88, 20, 21, 65 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 88

List of positive integer factors of 88 that divides 88 without a remainder.

1,2,4,8,11,22,44,88

Factors of 20

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

1,2,4,5,10,20

Factors of 21

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

1,3,7,21

Factors of 65

List of positive integer factors of 65 that divides 65 without a remainder.

1,5,13,65

Greatest Common Factor

We found the factors 88,20,21,65 . The biggest common factor number is the GCF number.
So the greatest common factor 88,20,21,65 is 1.

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

• GCF of 79, 58, 26, 39
• GCF of 91, 12, 25, 61
• GCF of 83, 40, 90, 38
• GCF of 10, 71, 65, 75
• GCF of 78, 89, 55, 56

1. What is the GCF of 88, 20, 21, 65?

Answer: GCF of 88, 20, 21, 65 is 1.

2. How to Find the GCF of 88, 20, 21, 65

Answer: Greatest Common Factor(GCF) of 88, 20, 21, 65 = 1

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

Step 2: Then multiply all the prime factors GCF(88, 20, 21, 65) = 1.