Greatest Common Factor of 20, 73, 81, 60

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

• Greatest Common Factor of 20, 73, 81, 60 by common division method
• Greatest Common Factor of 20, 73, 81, 60 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 73

List of positive integer factors of 73 that divides 73 without a remainder.

1,73

Factors of 81

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

1,3,9,27,81

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

Greatest Common Factor

We found the factors 20,73,81,60 . The biggest common factor number is the GCF number.
So the greatest common factor 20,73,81,60 is 1.

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

• GCF of 96, 94, 99, 51
• GCF of 12, 56, 96, 22
• GCF of 42, 43, 82, 90
• GCF of 56, 16, 30, 78
• GCF of 78, 70, 27, 99

1. What is the GCF of 20, 73, 81, 60?

Answer: GCF of 20, 73, 81, 60 is 1.

2. How to Find the GCF of 20, 73, 81, 60

Answer: Greatest Common Factor(GCF) of 20, 73, 81, 60 = 1

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

Step 2: Then multiply all the prime factors GCF(20, 73, 81, 60) = 1.