Greatest Common Factor of 20, 65, 553, 665

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

• Greatest Common Factor of 20, 65, 553, 665 by common division method
• Greatest Common Factor of 20, 65, 553, 665 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 65

List of positive integer factors of 65 that divides 65 without a remainder.

1,5,13,65

Factors of 553

List of positive integer factors of 553 that divides 553 without a remainder.

1,7,79,553

Factors of 665

List of positive integer factors of 665 that divides 665 without a remainder.

1,5,7,19,35,95,133,665

Greatest Common Factor

We found the factors 20,65,553,665 . The biggest common factor number is the GCF number.
So the greatest common factor 20,65,553,665 is 1.

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

• GCF of 90, 14, 255, 365
• GCF of 59, 67, 349, 312
• GCF of 61, 53, 809, 828
• GCF of 19, 77, 497, 691
• GCF of 15, 95, 731, 709

1. What is the GCF of 20, 65, 553, 665?

Answer: GCF of 20, 65, 553, 665 is 1.

2. How to Find the GCF of 20, 65, 553, 665

Answer: Greatest Common Factor(GCF) of 20, 65, 553, 665 = 1

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

Step 2: Then multiply all the prime factors GCF(20, 65, 553, 665) = 1.