Greatest Common Factor of 31, 20, 13, 480

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

• Greatest Common Factor of 31, 20, 13, 480 by common division method
• Greatest Common Factor of 31, 20, 13, 480 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 31

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

1,31

Factors of 20

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

1,2,4,5,10,20

Factors of 13

List of positive integer factors of 13 that divides 13 without a remainder.

1,13

Factors of 480

List of positive integer factors of 480 that divides 480 without a remainder.

1,2,3,4,5,6,8,10,12,15,16,20,24,30,32,40,48,60,80,96,120,160,240,480

Greatest Common Factor

We found the factors 31,20,13,480 . The biggest common factor number is the GCF number.
So the greatest common factor 31,20,13,480 is 1.

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

• GCF of 43, 10, 93, 630
• GCF of 17, 11, 54, 953
• GCF of 52, 65, 87, 148
• GCF of 95, 23, 10, 163
• GCF of 22, 60, 60, 275

1. What is the GCF of 31, 20, 13, 480?

Answer: GCF of 31, 20, 13, 480 is 1.

2. How to Find the GCF of 31, 20, 13, 480

Answer: Greatest Common Factor(GCF) of 31, 20, 13, 480 = 1

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

Step 2: Then multiply all the prime factors GCF(31, 20, 13, 480) = 1.