Greatest Common Factor of 5, 80, 49, 42, 81

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

• Greatest Common Factor of 5, 80, 49, 42, 81 by common division method
• Greatest Common Factor of 5, 80, 49, 42, 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 5

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

1,5

Factors of 80

List of positive integer factors of 80 that divides 80 without a remainder.

1,2,4,5,8,10,16,20,40,80

Factors of 49

List of positive integer factors of 49 that divides 49 without a remainder.

1,7,49

Factors of 42

List of positive integer factors of 42 that divides 42 without a remainder.

1,2,3,6,7,14,21,42

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 5,80,49,42,81 . The biggest common factor number is the GCF number.
So the greatest common factor 5,80,49,42,81 is 1.

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

• GCF of 8, 38, 53, 59, 68
• GCF of 6, 75, 99, 14, 80
• GCF of 5, 97, 65, 76, 70
• GCF of 2, 76, 95, 40, 79
• GCF of 3, 50, 46, 99, 84

1. What is the GCF of 5, 80, 49, 42, 81?

Answer: GCF of 5, 80, 49, 42, 81 is 1.

2. How to Find the GCF of 5, 80, 49, 42, 81

Answer: Greatest Common Factor(GCF) of 5, 80, 49, 42, 81 = 1

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

Step 2: Then multiply all the prime factors GCF(5, 80, 49, 42, 81) = 1.