Greatest Common Factor of 21, 20, 819, 928

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

• Greatest Common Factor of 21, 20, 819, 928 by common division method
• Greatest Common Factor of 21, 20, 819, 928 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 20

List of positive integer factors of 20 that divides 20 without a remainder.

1,2,4,5,10,20

Factors of 819

List of positive integer factors of 819 that divides 819 without a remainder.

1,3,7,9,13,21,39,63,91,117,273,819

Factors of 928

List of positive integer factors of 928 that divides 928 without a remainder.

1,2,4,8,16,29,32,58,116,232,464,928

Greatest Common Factor

We found the factors 21,20,819,928 . The biggest common factor number is the GCF number.
So the greatest common factor 21,20,819,928 is 1.

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

• GCF of 63, 18, 983, 282
• GCF of 21, 20, 295, 457
• GCF of 96, 56, 334, 978
• GCF of 35, 98, 418, 514
• GCF of 45, 50, 284, 658

1. What is the GCF of 21, 20, 819, 928?

Answer: GCF of 21, 20, 819, 928 is 1.

2. How to Find the GCF of 21, 20, 819, 928

Answer: Greatest Common Factor(GCF) of 21, 20, 819, 928 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 20, 819, 928) = 1.