Greatest Common Factor of 15, 98, 30, 80

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

• Greatest Common Factor of 15, 98, 30, 80 by common division method
• Greatest Common Factor of 15, 98, 30, 80 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 98

List of positive integer factors of 98 that divides 98 without a remainder.

1,2,7,14,49,98

Factors of 30

List of positive integer factors of 30 that divides 30 without a remainder.

1,2,3,5,6,10,15,30

Factors of 80

List of positive integer factors of 80 that divides 80 without a remainder.

1,2,4,5,8,10,16,20,40,80

Greatest Common Factor

We found the factors 15,98,30,80 . The biggest common factor number is the GCF number.
So the greatest common factor 15,98,30,80 is 1.

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

• GCF of 22, 95, 47, 75
• GCF of 69, 69, 53, 18
• GCF of 19, 66, 65, 91
• GCF of 95, 54, 89, 97
• GCF of 18, 85, 73, 62

1. What is the GCF of 15, 98, 30, 80?

Answer: GCF of 15, 98, 30, 80 is 1.

2. How to Find the GCF of 15, 98, 30, 80

Answer: Greatest Common Factor(GCF) of 15, 98, 30, 80 = 1

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

Step 2: Then multiply all the prime factors GCF(15, 98, 30, 80) = 1.