Greatest Common Factor of 25, 45, 20, 491

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

• Greatest Common Factor of 25, 45, 20, 491 by common division method
• Greatest Common Factor of 25, 45, 20, 491 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 25

List of positive integer factors of 25 that divides 25 without a remainder.

1,5,25

Factors of 45

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

1,3,5,9,15,45

Factors of 20

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

1,2,4,5,10,20

Factors of 491

List of positive integer factors of 491 that divides 491 without a remainder.

1,491

Greatest Common Factor

We found the factors 25,45,20,491 . The biggest common factor number is the GCF number.
So the greatest common factor 25,45,20,491 is 1.

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

• GCF of 28, 37, 80, 301
• GCF of 63, 65, 49, 914
• GCF of 94, 23, 83, 387
• GCF of 88, 36, 87, 574
• GCF of 68, 15, 35, 370

1. What is the GCF of 25, 45, 20, 491?

Answer: GCF of 25, 45, 20, 491 is 1.

2. How to Find the GCF of 25, 45, 20, 491

Answer: Greatest Common Factor(GCF) of 25, 45, 20, 491 = 1

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

Step 2: Then multiply all the prime factors GCF(25, 45, 20, 491) = 1.