Greatest Common Factor of 557, 421, 20

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

• Greatest Common Factor of 557, 421, 20 by common division method
• Greatest Common Factor of 557, 421, 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 557

List of positive integer factors of 557 that divides 557 without a remainder.

1,557

Factors of 421

List of positive integer factors of 421 that divides 421 without a remainder.

1,421

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 557,421,20 . The biggest common factor number is the GCF number.
So the greatest common factor 557,421,20 is 1.

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

• GCF of 169, 614, 16
• GCF of 797, 798, 57
• GCF of 213, 147, 93
• GCF of 994, 426, 72
• GCF of 310, 237, 21

1. What is the GCF of 557, 421, 20?

Answer: GCF of 557, 421, 20 is 1.

2. How to Find the GCF of 557, 421, 20

Answer: Greatest Common Factor(GCF) of 557, 421, 20 = 1

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

Step 2: Then multiply all the prime factors GCF(557, 421, 20) = 1.