Greatest Common Factor of 56, 57, 65, 90

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

• Greatest Common Factor of 56, 57, 65, 90 by common division method
• Greatest Common Factor of 56, 57, 65, 90 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 56

List of positive integer factors of 56 that divides 56 without a remainder.

1,2,4,7,8,14,28,56

Factors of 57

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

1,3,19,57

Factors of 65

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

1,5,13,65

Factors of 90

List of positive integer factors of 90 that divides 90 without a remainder.

1,2,3,5,6,9,10,15,18,30,45,90

Greatest Common Factor

We found the factors 56,57,65,90 . The biggest common factor number is the GCF number.
So the greatest common factor 56,57,65,90 is 1.

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

• GCF of 56, 30, 71, 64
• GCF of 46, 23, 66, 11
• GCF of 91, 49, 44, 41
• GCF of 27, 79, 93, 14
• GCF of 61, 29, 92, 34

1. What is the GCF of 56, 57, 65, 90?

Answer: GCF of 56, 57, 65, 90 is 1.

2. How to Find the GCF of 56, 57, 65, 90

Answer: Greatest Common Factor(GCF) of 56, 57, 65, 90 = 1

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

Step 2: Then multiply all the prime factors GCF(56, 57, 65, 90) = 1.