Greatest Common Factor of 21, 18, 631

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

• Greatest Common Factor of 21, 18, 631 by common division method
• Greatest Common Factor of 21, 18, 631 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 18

List of positive integer factors of 18 that divides 18 without a remainder.

1,2,3,6,9,18

Factors of 631

List of positive integer factors of 631 that divides 631 without a remainder.

1,631

Greatest Common Factor

We found the factors 21,18,631 . The biggest common factor number is the GCF number.
So the greatest common factor 21,18,631 is 1.

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

• GCF of 93, 27, 551
• GCF of 30, 76, 490
• GCF of 29, 75, 372
• GCF of 44, 12, 521
• GCF of 33, 39, 591

1. What is the GCF of 21, 18, 631?

Answer: GCF of 21, 18, 631 is 1.

2. How to Find the GCF of 21, 18, 631

Answer: Greatest Common Factor(GCF) of 21, 18, 631 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 18, 631) = 1.