Greatest Common Factor of 80, 18, 31, 840

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

• Greatest Common Factor of 80, 18, 31, 840 by common division method
• Greatest Common Factor of 80, 18, 31, 840 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 80

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

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

Factors of 18

List of positive integer factors of 18 that divides 18 without a remainder.

1,2,3,6,9,18

Factors of 31

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

1,31

Factors of 840

List of positive integer factors of 840 that divides 840 without a remainder.

1,2,3,4,5,6,7,8,10,12,14,15,20,21,24,28,30,35,40,42,56,60,70,84,105,120,140,168,210,280,420,840

Greatest Common Factor

We found the factors 80,18,31,840 . The biggest common factor number is the GCF number.
So the greatest common factor 80,18,31,840 is 1.

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

• GCF of 27, 65, 11, 981
• GCF of 87, 62, 98, 217
• GCF of 80, 48, 87, 763
• GCF of 31, 27, 26, 832
• GCF of 75, 28, 26, 357

1. What is the GCF of 80, 18, 31, 840?

Answer: GCF of 80, 18, 31, 840 is 1.

2. How to Find the GCF of 80, 18, 31, 840

Answer: Greatest Common Factor(GCF) of 80, 18, 31, 840 = 1

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

Step 2: Then multiply all the prime factors GCF(80, 18, 31, 840) = 1.