Greatest Common Factor of 42, 57, 621

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

• Greatest Common Factor of 42, 57, 621 by common division method
• Greatest Common Factor of 42, 57, 621 with matching the biggest common factor

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∴ So the GCF of the given numbers is 3 = 3

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 57

List of positive integer factors of 57 that divides 57 without a remainder.

1,3,19,57

Factors of 621

List of positive integer factors of 621 that divides 621 without a remainder.

1,3,9,23,27,69,207,621

Greatest Common Factor

We found the factors 42,57,621 . The biggest common factor number is the GCF number.
So the greatest common factor 42,57,621 is 3.

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

• GCF of 87, 58, 895
• GCF of 62, 13, 643
• GCF of 52, 54, 824
• GCF of 98, 36, 234
• GCF of 58, 75, 864

1. What is the GCF of 42, 57, 621?

Answer: GCF of 42, 57, 621 is 3.

2. How to Find the GCF of 42, 57, 621

Answer: Greatest Common Factor(GCF) of 42, 57, 621 = 3

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

Step 2: Then multiply all the prime factors GCF(42, 57, 621) = 3.