Greatest Common Factor of 20, 45, 13, 676

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

• Greatest Common Factor of 20, 45, 13, 676 by common division method
• Greatest Common Factor of 20, 45, 13, 676 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 45

List of positive integer factors of 45 that divides 45 without a remainder.

1,3,5,9,15,45

Factors of 13

List of positive integer factors of 13 that divides 13 without a remainder.

1,13

Factors of 676

List of positive integer factors of 676 that divides 676 without a remainder.

1,2,4,13,26,52,169,338,676

Greatest Common Factor

We found the factors 20,45,13,676 . The biggest common factor number is the GCF number.
So the greatest common factor 20,45,13,676 is 1.

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

• GCF of 12, 22, 38, 879
• GCF of 26, 22, 76, 242
• GCF of 26, 34, 30, 235
• GCF of 51, 81, 14, 316
• GCF of 27, 54, 85, 149

1. What is the GCF of 20, 45, 13, 676?

Answer: GCF of 20, 45, 13, 676 is 1.

2. How to Find the GCF of 20, 45, 13, 676

Answer: Greatest Common Factor(GCF) of 20, 45, 13, 676 = 1

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

Step 2: Then multiply all the prime factors GCF(20, 45, 13, 676) = 1.