Greatest Common Factor of 20, 81, 54, 430

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

• Greatest Common Factor of 20, 81, 54, 430 by common division method
• Greatest Common Factor of 20, 81, 54, 430 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 81

List of positive integer factors of 81 that divides 81 without a remainder.

1,3,9,27,81

Factors of 54

List of positive integer factors of 54 that divides 54 without a remainder.

1,2,3,6,9,18,27,54

Factors of 430

List of positive integer factors of 430 that divides 430 without a remainder.

1,2,5,10,43,86,215,430

Greatest Common Factor

We found the factors 20,81,54,430 . The biggest common factor number is the GCF number.
So the greatest common factor 20,81,54,430 is 1.

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

• GCF of 81, 26, 27, 109
• GCF of 42, 15, 51, 287
• GCF of 10, 49, 63, 863
• GCF of 17, 63, 76, 892
• GCF of 83, 73, 15, 894

1. What is the GCF of 20, 81, 54, 430?

Answer: GCF of 20, 81, 54, 430 is 1.

2. How to Find the GCF of 20, 81, 54, 430

Answer: Greatest Common Factor(GCF) of 20, 81, 54, 430 = 1

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

Step 2: Then multiply all the prime factors GCF(20, 81, 54, 430) = 1.