Greatest Common Factor of 47, 91, 64, 70, 20

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

• Greatest Common Factor of 47, 91, 64, 70, 20 by common division method
• Greatest Common Factor of 47, 91, 64, 70, 20 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 47

List of positive integer factors of 47 that divides 47 without a remainder.

1,47

Factors of 91

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

1,7,13,91

Factors of 64

List of positive integer factors of 64 that divides 64 without a remainder.

1,2,4,8,16,32,64

Factors of 70

List of positive integer factors of 70 that divides 70 without a remainder.

1,2,5,7,10,14,35,70

Factors of 20

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

1,2,4,5,10,20

Greatest Common Factor

We found the factors 47,91,64,70,20 . The biggest common factor number is the GCF number.
So the greatest common factor 47,91,64,70,20 is 1.

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

• GCF of 76, 37, 44, 49, 34
• GCF of 79, 68, 18, 87, 10
• GCF of 80, 94, 66, 71, 53
• GCF of 65, 58, 74, 27, 59
• GCF of 23, 38, 64, 22, 24

1. What is the GCF of 47, 91, 64, 70, 20?

Answer: GCF of 47, 91, 64, 70, 20 is 1.

2. How to Find the GCF of 47, 91, 64, 70, 20

Answer: Greatest Common Factor(GCF) of 47, 91, 64, 70, 20 = 1

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

Step 2: Then multiply all the prime factors GCF(47, 91, 64, 70, 20) = 1.