Greatest Common Factor of 20, 48, 5, 81

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

• Greatest Common Factor of 20, 48, 5, 81 by common division method
• Greatest Common Factor of 20, 48, 5, 81 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 48

List of positive integer factors of 48 that divides 48 without a remainder.

1,2,3,4,6,8,12,16,24,48

Factors of 5

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

1,5

Factors of 81

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

1,3,9,27,81

Greatest Common Factor

We found the factors 20,48,5,81 . The biggest common factor number is the GCF number.
So the greatest common factor 20,48,5,81 is 1.

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

• GCF of 39, 75, 7, 76
• GCF of 87, 22, 7, 97
• GCF of 39, 76, 2, 80
• GCF of 11, 35, 6, 74
• GCF of 27, 38, 9, 88

1. What is the GCF of 20, 48, 5, 81?

Answer: GCF of 20, 48, 5, 81 is 1.

2. How to Find the GCF of 20, 48, 5, 81

Answer: Greatest Common Factor(GCF) of 20, 48, 5, 81 = 1

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

Step 2: Then multiply all the prime factors GCF(20, 48, 5, 81) = 1.