Greatest Common Factor of 20, 30, 819

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

• Greatest Common Factor of 20, 30, 819 by common division method
• Greatest Common Factor of 20, 30, 819 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 20

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

1,2,4,5,10,20

Factors of 30

List of positive integer factors of 30 that divides 30 without a remainder.

1,2,3,5,6,10,15,30

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 20,30,819 . The biggest common factor number is the GCF number.
So the greatest common factor 20,30,819 is 1.

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

• GCF of 89, 54, 282
• GCF of 87, 75, 285
• GCF of 66, 27, 742
• GCF of 26, 21, 824
• GCF of 23, 40, 528

1. What is the GCF of 20, 30, 819?

Answer: GCF of 20, 30, 819 is 1.

2. How to Find the GCF of 20, 30, 819

Answer: Greatest Common Factor(GCF) of 20, 30, 819 = 1

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

Step 2: Then multiply all the prime factors GCF(20, 30, 819) = 1.