Greatest Common Factor of 18, 44, 21, 215

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

• Greatest Common Factor of 18, 44, 21, 215 by common division method
• Greatest Common Factor of 18, 44, 21, 215 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 18

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

1,2,3,6,9,18

Factors of 44

List of positive integer factors of 44 that divides 44 without a remainder.

1,2,4,11,22,44

Factors of 21

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

1,3,7,21

Factors of 215

List of positive integer factors of 215 that divides 215 without a remainder.

1,5,43,215

Greatest Common Factor

We found the factors 18,44,21,215 . The biggest common factor number is the GCF number.
So the greatest common factor 18,44,21,215 is 1.

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

• GCF of 92, 74, 80, 718
• GCF of 29, 88, 39, 343
• GCF of 34, 46, 69, 107
• GCF of 39, 80, 68, 257
• GCF of 32, 20, 13, 825

1. What is the GCF of 18, 44, 21, 215?

Answer: GCF of 18, 44, 21, 215 is 1.

2. How to Find the GCF of 18, 44, 21, 215

Answer: Greatest Common Factor(GCF) of 18, 44, 21, 215 = 1

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

Step 2: Then multiply all the prime factors GCF(18, 44, 21, 215) = 1.