Greatest Common Factor of 98, 31, 85, 780

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

• Greatest Common Factor of 98, 31, 85, 780 by common division method
• Greatest Common Factor of 98, 31, 85, 780 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 98

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

1,2,7,14,49,98

Factors of 31

List of positive integer factors of 31 that divides 31 without a remainder.

1,31

Factors of 85

List of positive integer factors of 85 that divides 85 without a remainder.

1,5,17,85

Factors of 780

List of positive integer factors of 780 that divides 780 without a remainder.

1,2,3,4,5,6,10,12,13,15,20,26,30,39,52,60,65,78,130,156,195,260,390,780

Greatest Common Factor

We found the factors 98,31,85,780 . The biggest common factor number is the GCF number.
So the greatest common factor 98,31,85,780 is 1.

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

• GCF of 52, 91, 98, 171
• GCF of 88, 64, 82, 351
• GCF of 98, 34, 98, 737
• GCF of 27, 40, 90, 422
• GCF of 34, 45, 43, 168

1. What is the GCF of 98, 31, 85, 780?

Answer: GCF of 98, 31, 85, 780 is 1.

2. How to Find the GCF of 98, 31, 85, 780

Answer: Greatest Common Factor(GCF) of 98, 31, 85, 780 = 1

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

Step 2: Then multiply all the prime factors GCF(98, 31, 85, 780) = 1.