Greatest Common Factor of 801, 728, 21

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

• Greatest Common Factor of 801, 728, 21 by common division method
• Greatest Common Factor of 801, 728, 21 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 801

List of positive integer factors of 801 that divides 801 without a remainder.

1,3,9,89,267,801

Factors of 728

List of positive integer factors of 728 that divides 728 without a remainder.

1,2,4,7,8,13,14,26,28,52,56,91,104,182,364,728

Factors of 21

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

1,3,7,21

Greatest Common Factor

We found the factors 801,728,21 . The biggest common factor number is the GCF number.
So the greatest common factor 801,728,21 is 1.

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

• GCF of 163, 854, 75
• GCF of 503, 222, 20
• GCF of 637, 614, 49
• GCF of 761, 245, 88
• GCF of 207, 877, 82

1. What is the GCF of 801, 728, 21?

Answer: GCF of 801, 728, 21 is 1.

2. How to Find the GCF of 801, 728, 21

Answer: Greatest Common Factor(GCF) of 801, 728, 21 = 1

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

Step 2: Then multiply all the prime factors GCF(801, 728, 21) = 1.