Greatest Common Factor of 20, 80, 99, 68

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

• Greatest Common Factor of 20, 80, 99, 68 by common division method
• Greatest Common Factor of 20, 80, 99, 68 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 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 99

List of positive integer factors of 99 that divides 99 without a remainder.

1,3,9,11,33,99

Factors of 68

List of positive integer factors of 68 that divides 68 without a remainder.

1,2,4,17,34,68

Greatest Common Factor

We found the factors 20,80,99,68 . The biggest common factor number is the GCF number.
So the greatest common factor 20,80,99,68 is 1.

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

• GCF of 78, 31, 50, 96
• GCF of 22, 35, 76, 31
• GCF of 67, 19, 96, 46
• GCF of 94, 50, 16, 14
• GCF of 77, 26, 67, 51

1. What is the GCF of 20, 80, 99, 68?

Answer: GCF of 20, 80, 99, 68 is 1.

2. How to Find the GCF of 20, 80, 99, 68

Answer: Greatest Common Factor(GCF) of 20, 80, 99, 68 = 1

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

Step 2: Then multiply all the prime factors GCF(20, 80, 99, 68) = 1.