Greatest Common Factor of 20, 78, 39, 89, 92

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

• Greatest Common Factor of 20, 78, 39, 89, 92 by common division method
• Greatest Common Factor of 20, 78, 39, 89, 92 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 20

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

1,2,4,5,10,20

Factors of 78

List of positive integer factors of 78 that divides 78 without a remainder.

1,2,3,6,13,26,39,78

Factors of 39

List of positive integer factors of 39 that divides 39 without a remainder.

1,3,13,39

Factors of 89

List of positive integer factors of 89 that divides 89 without a remainder.

1,89

Factors of 92

List of positive integer factors of 92 that divides 92 without a remainder.

1,2,4,23,46,92

Greatest Common Factor

We found the factors 20,78,39,89,92 . The biggest common factor number is the GCF number.
So the greatest common factor 20,78,39,89,92 is 1.

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

• GCF of 19, 59, 30, 70, 31
• GCF of 56, 45, 84, 49, 87
• GCF of 41, 49, 41, 83, 56
• GCF of 21, 35, 36, 14, 14
• GCF of 34, 64, 93, 65, 66

1. What is the GCF of 20, 78, 39, 89, 92?

Answer: GCF of 20, 78, 39, 89, 92 is 1.

2. How to Find the GCF of 20, 78, 39, 89, 92

Answer: Greatest Common Factor(GCF) of 20, 78, 39, 89, 92 = 1

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

Step 2: Then multiply all the prime factors GCF(20, 78, 39, 89, 92) = 1.