Greatest Common Factor of 810, 998, 20

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

• Greatest Common Factor of 810, 998, 20 by common division method
• Greatest Common Factor of 810, 998, 20 with matching the biggest common factor

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∴ So the GCF of the given numbers is 2 = 2

Factors of 810

List of positive integer factors of 810 that divides 810 without a remainder.

1,2,3,5,6,9,10,15,18,27,30,45,54,81,90,135,162,270,405,810

Factors of 998

List of positive integer factors of 998 that divides 998 without a remainder.

1,2,499,998

Factors of 20

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

1,2,4,5,10,20

Greatest Common Factor

We found the factors 810,998,20 . The biggest common factor number is the GCF number.
So the greatest common factor 810,998,20 is 2.

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

• GCF of 705, 565, 92
• GCF of 159, 217, 93
• GCF of 115, 382, 74
• GCF of 191, 853, 55
• GCF of 307, 364, 16

1. What is the GCF of 810, 998, 20?

Answer: GCF of 810, 998, 20 is 2.

2. How to Find the GCF of 810, 998, 20

Answer: Greatest Common Factor(GCF) of 810, 998, 20 = 2

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

Step 2: Then multiply all the prime factors GCF(810, 998, 20) = 2.