Greatest Common Factor of 81, 21, 494

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

• Greatest Common Factor of 81, 21, 494 by common division method
• Greatest Common Factor of 81, 21, 494 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 21

List of positive integer factors of 21 that divides 21 without a remainder.

1,3,7,21

Factors of 494

List of positive integer factors of 494 that divides 494 without a remainder.

1,2,13,19,26,38,247,494

Greatest Common Factor

We found the factors 81,21,494 . The biggest common factor number is the GCF number.
So the greatest common factor 81,21,494 is 1.

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

• GCF of 94, 82, 996
• GCF of 90, 64, 944
• GCF of 16, 61, 972
• GCF of 35, 36, 628
• GCF of 73, 81, 306

1. What is the GCF of 81, 21, 494?

Answer: GCF of 81, 21, 494 is 1.

2. How to Find the GCF of 81, 21, 494

Answer: Greatest Common Factor(GCF) of 81, 21, 494 = 1

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

Step 2: Then multiply all the prime factors GCF(81, 21, 494) = 1.