Greatest Common Factor of 21, 63, 60, 819

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

• Greatest Common Factor of 21, 63, 60, 819 by common division method
• Greatest Common Factor of 21, 63, 60, 819 with matching the biggest common factor

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∴ So the GCF of the given numbers is 3 = 3

Factors of 21

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

1,3,7,21

Factors of 63

List of positive integer factors of 63 that divides 63 without a remainder.

1,3,7,9,21,63

Factors of 60

List of positive integer factors of 60 that divides 60 without a remainder.

1,2,3,4,5,6,10,12,15,20,30,60

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

Greatest Common Factor

We found the factors 21,63,60,819 . The biggest common factor number is the GCF number.
So the greatest common factor 21,63,60,819 is 3.

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

• GCF of 16, 56, 14, 824
• GCF of 87, 98, 73, 935
• GCF of 34, 27, 41, 813
• GCF of 48, 67, 54, 120
• GCF of 36, 39, 26, 405

1. What is the GCF of 21, 63, 60, 819?

Answer: GCF of 21, 63, 60, 819 is 3.

2. How to Find the GCF of 21, 63, 60, 819

Answer: Greatest Common Factor(GCF) of 21, 63, 60, 819 = 3

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

Step 2: Then multiply all the prime factors GCF(21, 63, 60, 819) = 3.