Greatest Common Factor of 21, 86, 64, 921

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

• Greatest Common Factor of 21, 86, 64, 921 by common division method
• Greatest Common Factor of 21, 86, 64, 921 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 21

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

1,3,7,21

Factors of 86

List of positive integer factors of 86 that divides 86 without a remainder.

1,2,43,86

Factors of 64

List of positive integer factors of 64 that divides 64 without a remainder.

1,2,4,8,16,32,64

Factors of 921

List of positive integer factors of 921 that divides 921 without a remainder.

1,3,307,921

Greatest Common Factor

We found the factors 21,86,64,921 . The biggest common factor number is the GCF number.
So the greatest common factor 21,86,64,921 is 1.

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

• GCF of 46, 39, 44, 586
• GCF of 20, 60, 73, 738
• GCF of 63, 13, 55, 822
• GCF of 70, 86, 28, 647
• GCF of 90, 72, 77, 123

1. What is the GCF of 21, 86, 64, 921?

Answer: GCF of 21, 86, 64, 921 is 1.

2. How to Find the GCF of 21, 86, 64, 921

Answer: Greatest Common Factor(GCF) of 21, 86, 64, 921 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 86, 64, 921) = 1.