Greatest Common Factor of 28, 45, 65, 196

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

• Greatest Common Factor of 28, 45, 65, 196 by common division method
• Greatest Common Factor of 28, 45, 65, 196 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 45

List of positive integer factors of 45 that divides 45 without a remainder.

1,3,5,9,15,45

Factors of 65

List of positive integer factors of 65 that divides 65 without a remainder.

1,5,13,65

Factors of 196

List of positive integer factors of 196 that divides 196 without a remainder.

1,2,4,7,14,28,49,98,196

Greatest Common Factor

We found the factors 28,45,65,196 . The biggest common factor number is the GCF number.
So the greatest common factor 28,45,65,196 is 1.

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

• GCF of 16, 71, 67, 431
• GCF of 98, 88, 79, 782
• GCF of 15, 46, 76, 561
• GCF of 93, 80, 26, 901
• GCF of 81, 30, 22, 654

1. What is the GCF of 28, 45, 65, 196?

Answer: GCF of 28, 45, 65, 196 is 1.

2. How to Find the GCF of 28, 45, 65, 196

Answer: Greatest Common Factor(GCF) of 28, 45, 65, 196 = 1

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

Step 2: Then multiply all the prime factors GCF(28, 45, 65, 196) = 1.