Greatest Common Factor of 66, 42, 20, 531

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

• Greatest Common Factor of 66, 42, 20, 531 by common division method
• Greatest Common Factor of 66, 42, 20, 531 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 66

List of positive integer factors of 66 that divides 66 without a remainder.

1,2,3,6,11,22,33,66

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 531

List of positive integer factors of 531 that divides 531 without a remainder.

1,3,9,59,177,531

Greatest Common Factor

We found the factors 66,42,20,531 . The biggest common factor number is the GCF number.
So the greatest common factor 66,42,20,531 is 1.

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

• GCF of 50, 84, 17, 217
• GCF of 76, 42, 15, 952
• GCF of 46, 90, 31, 906
• GCF of 17, 68, 34, 733
• GCF of 53, 79, 78, 189

1. What is the GCF of 66, 42, 20, 531?

Answer: GCF of 66, 42, 20, 531 is 1.

2. How to Find the GCF of 66, 42, 20, 531

Answer: Greatest Common Factor(GCF) of 66, 42, 20, 531 = 1

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

Step 2: Then multiply all the prime factors GCF(66, 42, 20, 531) = 1.