Greatest Common Factor of 21, 57, 14, 387

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

• Greatest Common Factor of 21, 57, 14, 387 by common division method
• Greatest Common Factor of 21, 57, 14, 387 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 21

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

1,3,7,21

Factors of 57

List of positive integer factors of 57 that divides 57 without a remainder.

1,3,19,57

Factors of 14

List of positive integer factors of 14 that divides 14 without a remainder.

1,2,7,14

Factors of 387

List of positive integer factors of 387 that divides 387 without a remainder.

1,3,9,43,129,387

Greatest Common Factor

We found the factors 21,57,14,387 . The biggest common factor number is the GCF number.
So the greatest common factor 21,57,14,387 is 1.

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

• GCF of 21, 54, 63, 881
• GCF of 96, 28, 13, 374
• GCF of 41, 62, 23, 556
• GCF of 63, 50, 91, 186
• GCF of 53, 49, 96, 808

1. What is the GCF of 21, 57, 14, 387?

Answer: GCF of 21, 57, 14, 387 is 1.

2. How to Find the GCF of 21, 57, 14, 387

Answer: Greatest Common Factor(GCF) of 21, 57, 14, 387 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 57, 14, 387) = 1.