Greatest Common Factor of 20, 24, 81, 109

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

• Greatest Common Factor of 20, 24, 81, 109 by common division method
• Greatest Common Factor of 20, 24, 81, 109 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 20

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

1,2,4,5,10,20

Factors of 24

List of positive integer factors of 24 that divides 24 without a remainder.

1,2,3,4,6,8,12,24

Factors of 81

List of positive integer factors of 81 that divides 81 without a remainder.

1,3,9,27,81

Factors of 109

List of positive integer factors of 109 that divides 109 without a remainder.

1,109

Greatest Common Factor

We found the factors 20,24,81,109 . The biggest common factor number is the GCF number.
So the greatest common factor 20,24,81,109 is 1.

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

• GCF of 24, 99, 49, 420
• GCF of 54, 59, 17, 762
• GCF of 87, 38, 44, 558
• GCF of 40, 79, 13, 868
• GCF of 22, 66, 88, 419

1. What is the GCF of 20, 24, 81, 109?

Answer: GCF of 20, 24, 81, 109 is 1.

2. How to Find the GCF of 20, 24, 81, 109

Answer: Greatest Common Factor(GCF) of 20, 24, 81, 109 = 1

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

Step 2: Then multiply all the prime factors GCF(20, 24, 81, 109) = 1.