Greatest Common Factor of 859, 728, 21

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

• Greatest Common Factor of 859, 728, 21 by common division method
• Greatest Common Factor of 859, 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 859

List of positive integer factors of 859 that divides 859 without a remainder.

1,859

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 859,728,21 . The biggest common factor number is the GCF number.
So the greatest common factor 859,728,21 is 1.

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

• GCF of 787, 773, 11
• GCF of 782, 386, 52
• GCF of 400, 377, 54
• GCF of 287, 526, 16
• GCF of 576, 398, 85

1. What is the GCF of 859, 728, 21?

Answer: GCF of 859, 728, 21 is 1.

2. How to Find the GCF of 859, 728, 21

Answer: Greatest Common Factor(GCF) of 859, 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(859, 728, 21) = 1.