Greatest Common Factor of 80, 80, 81, 45

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

• Greatest Common Factor of 80, 80, 81, 45 by common division method
• Greatest Common Factor of 80, 80, 81, 45 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 80

List of positive integer factors of 80 that divides 80 without a remainder.

1,2,4,5,8,10,16,20,40,80

Factors of 80

List of positive integer factors of 80 that divides 80 without a remainder.

1,2,4,5,8,10,16,20,40,80

Factors of 81

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

1,3,9,27,81

Factors of 45

List of positive integer factors of 45 that divides 45 without a remainder.

1,3,5,9,15,45

Greatest Common Factor

We found the factors 80,80,81,45 . The biggest common factor number is the GCF number.
So the greatest common factor 80,80,81,45 is 1.

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

• GCF of 62, 23, 64, 33
• GCF of 11, 52, 44, 17
• GCF of 74, 91, 99, 93
• GCF of 14, 83, 54, 68
• GCF of 81, 54, 12, 43

1. What is the GCF of 80, 80, 81, 45?

Answer: GCF of 80, 80, 81, 45 is 1.

2. How to Find the GCF of 80, 80, 81, 45

Answer: Greatest Common Factor(GCF) of 80, 80, 81, 45 = 1

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

Step 2: Then multiply all the prime factors GCF(80, 80, 81, 45) = 1.