Greatest Common Factor of 31, 42, 65, 280

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

• Greatest Common Factor of 31, 42, 65, 280 by common division method
• Greatest Common Factor of 31, 42, 65, 280 with matching the biggest common factor

Maximum 4 Number can be enter but you can reset

∴ 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 42

List of positive integer factors of 42 that divides 42 without a remainder.

1,2,3,6,7,14,21,42

Factors of 65

List of positive integer factors of 65 that divides 65 without a remainder.

1,5,13,65

Factors of 280

List of positive integer factors of 280 that divides 280 without a remainder.

1,2,4,5,7,8,10,14,20,28,35,40,56,70,140,280

Greatest Common Factor

We found the factors 31,42,65,280 . The biggest common factor number is the GCF number.
So the greatest common factor 31,42,65,280 is 1.

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

• GCF of 15, 94, 20, 866
• GCF of 15, 84, 59, 806
• GCF of 48, 33, 91, 826
• GCF of 72, 26, 81, 321
• GCF of 33, 17, 77, 443

1. What is the GCF of 31, 42, 65, 280?

Answer: GCF of 31, 42, 65, 280 is 1.

2. How to Find the GCF of 31, 42, 65, 280

Answer: Greatest Common Factor(GCF) of 31, 42, 65, 280 = 1

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

Step 2: Then multiply all the prime factors GCF(31, 42, 65, 280) = 1.