Greatest Common Factor of 81, 57, 17, 980

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

• Greatest Common Factor of 81, 57, 17, 980 by common division method
• Greatest Common Factor of 81, 57, 17, 980 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 81

List of positive integer factors of 81 that divides 81 without a remainder.

1,3,9,27,81

Factors of 57

List of positive integer factors of 57 that divides 57 without a remainder.

1,3,19,57

Factors of 17

List of positive integer factors of 17 that divides 17 without a remainder.

1,17

Factors of 980

List of positive integer factors of 980 that divides 980 without a remainder.

1,2,4,5,7,10,14,20,28,35,49,70,98,140,196,245,490,980

Greatest Common Factor

We found the factors 81,57,17,980 . The biggest common factor number is the GCF number.
So the greatest common factor 81,57,17,980 is 1.

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

• GCF of 29, 71, 75, 745
• GCF of 62, 60, 28, 941
• GCF of 36, 79, 48, 162
• GCF of 20, 19, 55, 975
• GCF of 43, 94, 54, 383

1. What is the GCF of 81, 57, 17, 980?

Answer: GCF of 81, 57, 17, 980 is 1.

2. How to Find the GCF of 81, 57, 17, 980

Answer: Greatest Common Factor(GCF) of 81, 57, 17, 980 = 1

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

Step 2: Then multiply all the prime factors GCF(81, 57, 17, 980) = 1.