Greatest Common Factor of 31, 66, 84, 21

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

• Greatest Common Factor of 31, 66, 84, 21 by common division method
• Greatest Common Factor of 31, 66, 84, 21 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 66

List of positive integer factors of 66 that divides 66 without a remainder.

1,2,3,6,11,22,33,66

Factors of 84

List of positive integer factors of 84 that divides 84 without a remainder.

1,2,3,4,6,7,12,14,21,28,42,84

Factors of 21

List of positive integer factors of 21 that divides 21 without a remainder.

1,3,7,21

Greatest Common Factor

We found the factors 31,66,84,21 . The biggest common factor number is the GCF number.
So the greatest common factor 31,66,84,21 is 1.

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

• GCF of 74, 29, 60, 55
• GCF of 22, 34, 40, 82
• GCF of 81, 71, 47, 92
• GCF of 65, 96, 61, 32
• GCF of 72, 16, 49, 56

1. What is the GCF of 31, 66, 84, 21?

Answer: GCF of 31, 66, 84, 21 is 1.

2. How to Find the GCF of 31, 66, 84, 21

Answer: Greatest Common Factor(GCF) of 31, 66, 84, 21 = 1

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

Step 2: Then multiply all the prime factors GCF(31, 66, 84, 21) = 1.