Greatest Common Factor of 21, 90, 27, 664

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

• Greatest Common Factor of 21, 90, 27, 664 by common division method
• Greatest Common Factor of 21, 90, 27, 664 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 90

List of positive integer factors of 90 that divides 90 without a remainder.

1,2,3,5,6,9,10,15,18,30,45,90

Factors of 27

List of positive integer factors of 27 that divides 27 without a remainder.

1,3,9,27

Factors of 664

List of positive integer factors of 664 that divides 664 without a remainder.

1,2,4,8,83,166,332,664

Greatest Common Factor

We found the factors 21,90,27,664 . The biggest common factor number is the GCF number.
So the greatest common factor 21,90,27,664 is 1.

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

• GCF of 18, 12, 90, 872
• GCF of 94, 86, 50, 608
• GCF of 44, 80, 33, 120
• GCF of 73, 85, 10, 396
• GCF of 88, 54, 26, 944

1. What is the GCF of 21, 90, 27, 664?

Answer: GCF of 21, 90, 27, 664 is 1.

2. How to Find the GCF of 21, 90, 27, 664

Answer: Greatest Common Factor(GCF) of 21, 90, 27, 664 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 90, 27, 664) = 1.