Greatest Common Factor of 90, 21, 89, 540

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

• Greatest Common Factor of 90, 21, 89, 540 by common division method
• Greatest Common Factor of 90, 21, 89, 540 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 21

List of positive integer factors of 21 that divides 21 without a remainder.

1,3,7,21

Factors of 89

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

1,89

Factors of 540

List of positive integer factors of 540 that divides 540 without a remainder.

1,2,3,4,5,6,9,10,12,15,18,20,27,30,36,45,54,60,90,108,135,180,270,540

Greatest Common Factor

We found the factors 90,21,89,540 . The biggest common factor number is the GCF number.
So the greatest common factor 90,21,89,540 is 1.

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

• GCF of 16, 21, 83, 873
• GCF of 19, 58, 97, 397
• GCF of 53, 15, 52, 938
• GCF of 45, 50, 23, 630
• GCF of 82, 82, 99, 757

1. What is the GCF of 90, 21, 89, 540?

Answer: GCF of 90, 21, 89, 540 is 1.

2. How to Find the GCF of 90, 21, 89, 540

Answer: Greatest Common Factor(GCF) of 90, 21, 89, 540 = 1

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

Step 2: Then multiply all the prime factors GCF(90, 21, 89, 540) = 1.