Greatest Common Factor of 21, 22, 218, 400

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

• Greatest Common Factor of 21, 22, 218, 400 by common division method
• Greatest Common Factor of 21, 22, 218, 400 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 22

List of positive integer factors of 22 that divides 22 without a remainder.

1,2,11,22

Factors of 218

List of positive integer factors of 218 that divides 218 without a remainder.

1,2,109,218

Factors of 400

List of positive integer factors of 400 that divides 400 without a remainder.

1,2,4,5,8,10,16,20,25,40,50,80,100,200,400

Greatest Common Factor

We found the factors 21,22,218,400 . The biggest common factor number is the GCF number.
So the greatest common factor 21,22,218,400 is 1.

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

• GCF of 62, 49, 890, 813
• GCF of 78, 65, 517, 405
• GCF of 14, 57, 557, 726
• GCF of 23, 47, 932, 730
• GCF of 38, 96, 846, 483

1. What is the GCF of 21, 22, 218, 400?

Answer: GCF of 21, 22, 218, 400 is 1.

2. How to Find the GCF of 21, 22, 218, 400

Answer: Greatest Common Factor(GCF) of 21, 22, 218, 400 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 22, 218, 400) = 1.