Greatest Common Factor of 858, 858, 21

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

• Greatest Common Factor of 858, 858, 21 by common division method
• Greatest Common Factor of 858, 858, 21 with matching the biggest common factor

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∴ So the GCF of the given numbers is 3 = 3

Factors of 858

List of positive integer factors of 858 that divides 858 without a remainder.

1,2,3,6,11,13,22,26,33,39,66,78,143,286,429,858

Factors of 858

List of positive integer factors of 858 that divides 858 without a remainder.

1,2,3,6,11,13,22,26,33,39,66,78,143,286,429,858

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 858,858,21 . The biggest common factor number is the GCF number.
So the greatest common factor 858,858,21 is 3.

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

• GCF of 375, 783, 56
• GCF of 105, 602, 99
• GCF of 664, 815, 67
• GCF of 910, 401, 27
• GCF of 746, 544, 33

1. What is the GCF of 858, 858, 21?

Answer: GCF of 858, 858, 21 is 3.

2. How to Find the GCF of 858, 858, 21

Answer: Greatest Common Factor(GCF) of 858, 858, 21 = 3

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

Step 2: Then multiply all the prime factors GCF(858, 858, 21) = 3.