Greatest Common Factor of 80, 98, 28, 621

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

• Greatest Common Factor of 80, 98, 28, 621 by common division method
• Greatest Common Factor of 80, 98, 28, 621 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 98

List of positive integer factors of 98 that divides 98 without a remainder.

1,2,7,14,49,98

Factors of 28

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

1,2,4,7,14,28

Factors of 621

List of positive integer factors of 621 that divides 621 without a remainder.

1,3,9,23,27,69,207,621

Greatest Common Factor

We found the factors 80,98,28,621 . The biggest common factor number is the GCF number.
So the greatest common factor 80,98,28,621 is 1.

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

• GCF of 60, 59, 24, 993
• GCF of 50, 94, 12, 821
• GCF of 99, 64, 52, 521
• GCF of 45, 96, 28, 540
• GCF of 62, 19, 43, 432

1. What is the GCF of 80, 98, 28, 621?

Answer: GCF of 80, 98, 28, 621 is 1.

2. How to Find the GCF of 80, 98, 28, 621

Answer: Greatest Common Factor(GCF) of 80, 98, 28, 621 = 1

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

Step 2: Then multiply all the prime factors GCF(80, 98, 28, 621) = 1.