Greatest Common Factor of 28, 209, 105

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

• Greatest Common Factor of 28, 209, 105 by common division method
• Greatest Common Factor of 28, 209, 105 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 28

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

1,2,4,7,14,28

Factors of 209

List of positive integer factors of 209 that divides 209 without a remainder.

1,11,19,209

Factors of 105

List of positive integer factors of 105 that divides 105 without a remainder.

1,3,5,7,15,21,35,105

Greatest Common Factor

We found the factors 28,209,105 . The biggest common factor number is the GCF number.
So the greatest common factor 28,209,105 is 1.

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

• GCF of 18, 362, 171
• GCF of 22, 279, 850
• GCF of 41, 242, 235
• GCF of 31, 748, 875
• GCF of 81, 647, 150

1. What is the GCF of 28, 209, 105?

Answer: GCF of 28, 209, 105 is 1.

2. How to Find the GCF of 28, 209, 105

Answer: Greatest Common Factor(GCF) of 28, 209, 105 = 1

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

Step 2: Then multiply all the prime factors GCF(28, 209, 105) = 1.