Greatest Common Factor of 90, 18, 56, 51

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

• Greatest Common Factor of 90, 18, 56, 51 by common division method
• Greatest Common Factor of 90, 18, 56, 51 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 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

Factors of 18

List of positive integer factors of 18 that divides 18 without a remainder.

1,2,3,6,9,18

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 51

List of positive integer factors of 51 that divides 51 without a remainder.

1,3,17,51

Greatest Common Factor

We found the factors 90,18,56,51 . The biggest common factor number is the GCF number.
So the greatest common factor 90,18,56,51 is 1.

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

• GCF of 10, 22, 92, 97
• GCF of 59, 39, 93, 83
• GCF of 36, 75, 54, 29
• GCF of 15, 58, 61, 14
• GCF of 57, 34, 61, 19

1. What is the GCF of 90, 18, 56, 51?

Answer: GCF of 90, 18, 56, 51 is 1.

2. How to Find the GCF of 90, 18, 56, 51

Answer: Greatest Common Factor(GCF) of 90, 18, 56, 51 = 1

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

Step 2: Then multiply all the prime factors GCF(90, 18, 56, 51) = 1.