Greatest Common Factor of 42, 62, 87, 20

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

• Greatest Common Factor of 42, 62, 87, 20 by common division method
• Greatest Common Factor of 42, 62, 87, 20 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 62

List of positive integer factors of 62 that divides 62 without a remainder.

1,2,31,62

Factors of 87

List of positive integer factors of 87 that divides 87 without a remainder.

1,3,29,87

Factors of 20

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

1,2,4,5,10,20

Greatest Common Factor

We found the factors 42,62,87,20 . The biggest common factor number is the GCF number.
So the greatest common factor 42,62,87,20 is 1.

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

• GCF of 20, 75, 32, 56
• GCF of 72, 72, 50, 23
• GCF of 99, 52, 25, 64
• GCF of 95, 81, 36, 71
• GCF of 82, 37, 43, 46

1. What is the GCF of 42, 62, 87, 20?

Answer: GCF of 42, 62, 87, 20 is 1.

2. How to Find the GCF of 42, 62, 87, 20

Answer: Greatest Common Factor(GCF) of 42, 62, 87, 20 = 1

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

Step 2: Then multiply all the prime factors GCF(42, 62, 87, 20) = 1.