Greatest Common Factor of 18, 89, 5, 20

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

• Greatest Common Factor of 18, 89, 5, 20 by common division method
• Greatest Common Factor of 18, 89, 5, 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 18

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

1,2,3,6,9,18

Factors of 89

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

1,89

Factors of 5

List of positive integer factors of 5 that divides 5 without a remainder.

1,5

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 18,89,5,20 . The biggest common factor number is the GCF number.
So the greatest common factor 18,89,5,20 is 1.

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

• GCF of 38, 57, 8, 88
• GCF of 62, 43, 7, 74
• GCF of 51, 54, 3, 12
• GCF of 68, 58, 3, 53
• GCF of 78, 69, 3, 28

1. What is the GCF of 18, 89, 5, 20?

Answer: GCF of 18, 89, 5, 20 is 1.

2. How to Find the GCF of 18, 89, 5, 20

Answer: Greatest Common Factor(GCF) of 18, 89, 5, 20 = 1

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

Step 2: Then multiply all the prime factors GCF(18, 89, 5, 20) = 1.