Greatest Common Factor of 21, 28, 418

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

• Greatest Common Factor of 21, 28, 418 by common division method
• Greatest Common Factor of 21, 28, 418 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 28

List of positive integer factors of 28 that divides 28 without a remainder.

1,2,4,7,14,28

Factors of 418

List of positive integer factors of 418 that divides 418 without a remainder.

1,2,11,19,22,38,209,418

Greatest Common Factor

We found the factors 21,28,418 . The biggest common factor number is the GCF number.
So the greatest common factor 21,28,418 is 1.

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

• GCF of 83, 68, 398
• GCF of 45, 99, 686
• GCF of 16, 78, 556
• GCF of 36, 68, 573
• GCF of 33, 77, 389

1. What is the GCF of 21, 28, 418?

Answer: GCF of 21, 28, 418 is 1.

2. How to Find the GCF of 21, 28, 418

Answer: Greatest Common Factor(GCF) of 21, 28, 418 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 28, 418) = 1.