Greatest Common Factor of 81, 99, 28, 580

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

• Greatest Common Factor of 81, 99, 28, 580 by common division method
• Greatest Common Factor of 81, 99, 28, 580 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 81

List of positive integer factors of 81 that divides 81 without a remainder.

1,3,9,27,81

Factors of 99

List of positive integer factors of 99 that divides 99 without a remainder.

1,3,9,11,33,99

Factors of 28

List of positive integer factors of 28 that divides 28 without a remainder.

1,2,4,7,14,28

Factors of 580

List of positive integer factors of 580 that divides 580 without a remainder.

1,2,4,5,10,20,29,58,116,145,290,580

Greatest Common Factor

We found the factors 81,99,28,580 . The biggest common factor number is the GCF number.
So the greatest common factor 81,99,28,580 is 1.

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

• GCF of 28, 37, 70, 480
• GCF of 81, 47, 80, 919
• GCF of 69, 75, 53, 454
• GCF of 80, 46, 68, 956
• GCF of 87, 18, 20, 920

1. What is the GCF of 81, 99, 28, 580?

Answer: GCF of 81, 99, 28, 580 is 1.

2. How to Find the GCF of 81, 99, 28, 580

Answer: Greatest Common Factor(GCF) of 81, 99, 28, 580 = 1

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

Step 2: Then multiply all the prime factors GCF(81, 99, 28, 580) = 1.