Greatest Common Factor of 42, 20, 55, 157

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

• Greatest Common Factor of 42, 20, 55, 157 by common division method
• Greatest Common Factor of 42, 20, 55, 157 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 42

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

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

Factors of 20

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

1,2,4,5,10,20

Factors of 55

List of positive integer factors of 55 that divides 55 without a remainder.

1,5,11,55

Factors of 157

List of positive integer factors of 157 that divides 157 without a remainder.

1,157

Greatest Common Factor

We found the factors 42,20,55,157 . The biggest common factor number is the GCF number.
So the greatest common factor 42,20,55,157 is 1.

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

• GCF of 79, 41, 45, 463
• GCF of 79, 50, 60, 107
• GCF of 79, 95, 49, 808
• GCF of 39, 83, 78, 522
• GCF of 90, 84, 88, 961

1. What is the GCF of 42, 20, 55, 157?

Answer: GCF of 42, 20, 55, 157 is 1.

2. How to Find the GCF of 42, 20, 55, 157

Answer: Greatest Common Factor(GCF) of 42, 20, 55, 157 = 1

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

Step 2: Then multiply all the prime factors GCF(42, 20, 55, 157) = 1.