Greatest Common Factor of 15, 69, 20, 69

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

• Greatest Common Factor of 15, 69, 20, 69 by common division method
• Greatest Common Factor of 15, 69, 20, 69 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 15

List of positive integer factors of 15 that divides 15 without a remainder.

1,3,5,15

Factors of 69

List of positive integer factors of 69 that divides 69 without a remainder.

1,3,23,69

Factors of 20

List of positive integer factors of 20 that divides 20 without a remainder.

1,2,4,5,10,20

Factors of 69

List of positive integer factors of 69 that divides 69 without a remainder.

1,3,23,69

Greatest Common Factor

We found the factors 15,69,20,69 . The biggest common factor number is the GCF number.
So the greatest common factor 15,69,20,69 is 1.

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

• GCF of 17, 88, 60, 57
• GCF of 27, 42, 83, 30
• GCF of 41, 72, 52, 49
• GCF of 35, 68, 62, 22
• GCF of 89, 81, 55, 54

1. What is the GCF of 15, 69, 20, 69?

Answer: GCF of 15, 69, 20, 69 is 1.

2. How to Find the GCF of 15, 69, 20, 69

Answer: Greatest Common Factor(GCF) of 15, 69, 20, 69 = 1

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

Step 2: Then multiply all the prime factors GCF(15, 69, 20, 69) = 1.