Greatest Common Factor of 21, 80, 73, 87, 66

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

• Greatest Common Factor of 21, 80, 73, 87, 66 by common division method
• Greatest Common Factor of 21, 80, 73, 87, 66 with matching the biggest common factor

Maximum 4 Number can be enter but you can reset

∴ GCF of numbers is 1 because of no common factors present between them.

Factors of 21

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

1,3,7,21

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 73

List of positive integer factors of 73 that divides 73 without a remainder.

1,73

Factors of 87

List of positive integer factors of 87 that divides 87 without a remainder.

1,3,29,87

Factors of 66

List of positive integer factors of 66 that divides 66 without a remainder.

1,2,3,6,11,22,33,66

Greatest Common Factor

We found the factors 21,80,73,87,66 . The biggest common factor number is the GCF number.
So the greatest common factor 21,80,73,87,66 is 1.

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

• GCF of 90, 35, 86, 30, 33
• GCF of 76, 78, 87, 79, 75
• GCF of 13, 52, 74, 44, 85
• GCF of 15, 61, 67, 98, 50
• GCF of 40, 30, 56, 83, 85

1. What is the GCF of 21, 80, 73, 87, 66?

Answer: GCF of 21, 80, 73, 87, 66 is 1.

2. How to Find the GCF of 21, 80, 73, 87, 66

Answer: Greatest Common Factor(GCF) of 21, 80, 73, 87, 66 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 80, 73, 87, 66) = 1.