Greatest Common Factor of 80, 21, 28, 193

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

• Greatest Common Factor of 80, 21, 28, 193 by common division method
• Greatest Common Factor of 80, 21, 28, 193 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 21

List of positive integer factors of 21 that divides 21 without a remainder.

1,3,7,21

Factors of 28

List of positive integer factors of 28 that divides 28 without a remainder.

1,2,4,7,14,28

Factors of 193

List of positive integer factors of 193 that divides 193 without a remainder.

1,193

Greatest Common Factor

We found the factors 80,21,28,193 . The biggest common factor number is the GCF number.
So the greatest common factor 80,21,28,193 is 1.

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

• GCF of 40, 88, 10, 625
• GCF of 89, 63, 20, 383
• GCF of 24, 35, 85, 343
• GCF of 90, 75, 40, 704
• GCF of 91, 45, 92, 927

1. What is the GCF of 80, 21, 28, 193?

Answer: GCF of 80, 21, 28, 193 is 1.

2. How to Find the GCF of 80, 21, 28, 193

Answer: Greatest Common Factor(GCF) of 80, 21, 28, 193 = 1

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

Step 2: Then multiply all the prime factors GCF(80, 21, 28, 193) = 1.