Greatest Common Factor of 20, 21, 565

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

• Greatest Common Factor of 20, 21, 565 by common division method
• Greatest Common Factor of 20, 21, 565 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 20

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

1,2,4,5,10,20

Factors of 21

List of positive integer factors of 21 that divides 21 without a remainder.

1,3,7,21

Factors of 565

List of positive integer factors of 565 that divides 565 without a remainder.

1,5,113,565

Greatest Common Factor

We found the factors 20,21,565 . The biggest common factor number is the GCF number.
So the greatest common factor 20,21,565 is 1.

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

• GCF of 87, 64, 535
• GCF of 98, 77, 144
• GCF of 42, 44, 658
• GCF of 93, 50, 969
• GCF of 17, 22, 418

1. What is the GCF of 20, 21, 565?

Answer: GCF of 20, 21, 565 is 1.

2. How to Find the GCF of 20, 21, 565

Answer: Greatest Common Factor(GCF) of 20, 21, 565 = 1

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

Step 2: Then multiply all the prime factors GCF(20, 21, 565) = 1.