Greatest Common Factor of 21, 64, 41, 399

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

• Greatest Common Factor of 21, 64, 41, 399 by common division method
• Greatest Common Factor of 21, 64, 41, 399 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 21

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

1,3,7,21

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 41

List of positive integer factors of 41 that divides 41 without a remainder.

1,41

Factors of 399

List of positive integer factors of 399 that divides 399 without a remainder.

1,3,7,19,21,57,133,399

Greatest Common Factor

We found the factors 21,64,41,399 . The biggest common factor number is the GCF number.
So the greatest common factor 21,64,41,399 is 1.

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

• GCF of 56, 76, 40, 626
• GCF of 88, 82, 80, 840
• GCF of 61, 62, 49, 639
• GCF of 40, 77, 98, 185
• GCF of 55, 43, 44, 188

1. What is the GCF of 21, 64, 41, 399?

Answer: GCF of 21, 64, 41, 399 is 1.

2. How to Find the GCF of 21, 64, 41, 399

Answer: Greatest Common Factor(GCF) of 21, 64, 41, 399 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 64, 41, 399) = 1.