Greatest Common Factor of 81, 80, 84, 19

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

• Greatest Common Factor of 81, 80, 84, 19 by common division method
• Greatest Common Factor of 81, 80, 84, 19 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 81

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

1,3,9,27,81

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 84

List of positive integer factors of 84 that divides 84 without a remainder.

1,2,3,4,6,7,12,14,21,28,42,84

Factors of 19

List of positive integer factors of 19 that divides 19 without a remainder.

1,19

Greatest Common Factor

We found the factors 81,80,84,19 . The biggest common factor number is the GCF number.
So the greatest common factor 81,80,84,19 is 1.

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

• GCF of 43, 97, 61, 17
• GCF of 48, 89, 40, 77
• GCF of 99, 89, 94, 34
• GCF of 26, 15, 46, 48
• GCF of 94, 31, 89, 36

1. What is the GCF of 81, 80, 84, 19?

Answer: GCF of 81, 80, 84, 19 is 1.

2. How to Find the GCF of 81, 80, 84, 19

Answer: Greatest Common Factor(GCF) of 81, 80, 84, 19 = 1

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

Step 2: Then multiply all the prime factors GCF(81, 80, 84, 19) = 1.