Greatest Common Factor of 28, 81, 961

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

• Greatest Common Factor of 28, 81, 961 by common division method
• Greatest Common Factor of 28, 81, 961 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 28

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

1,2,4,7,14,28

Factors of 81

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

1,3,9,27,81

Factors of 961

List of positive integer factors of 961 that divides 961 without a remainder.

1,31,961

Greatest Common Factor

We found the factors 28,81,961 . The biggest common factor number is the GCF number.
So the greatest common factor 28,81,961 is 1.

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

• GCF of 87, 60, 134
• GCF of 84, 20, 839
• GCF of 56, 45, 366
• GCF of 46, 71, 472
• GCF of 50, 45, 648

1. What is the GCF of 28, 81, 961?

Answer: GCF of 28, 81, 961 is 1.

2. How to Find the GCF of 28, 81, 961

Answer: Greatest Common Factor(GCF) of 28, 81, 961 = 1

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

Step 2: Then multiply all the prime factors GCF(28, 81, 961) = 1.