Greatest Common Factor of 21, 90, 34, 73

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

• Greatest Common Factor of 21, 90, 34, 73 by common division method
• Greatest Common Factor of 21, 90, 34, 73 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 21

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

1,3,7,21

Factors of 90

List of positive integer factors of 90 that divides 90 without a remainder.

1,2,3,5,6,9,10,15,18,30,45,90

Factors of 34

List of positive integer factors of 34 that divides 34 without a remainder.

1,2,17,34

Factors of 73

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

1,73

Greatest Common Factor

We found the factors 21,90,34,73 . The biggest common factor number is the GCF number.
So the greatest common factor 21,90,34,73 is 1.

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

• GCF of 17, 20, 58, 97
• GCF of 31, 97, 77, 57
• GCF of 88, 96, 61, 46
• GCF of 37, 60, 14, 70
• GCF of 41, 89, 11, 60

1. What is the GCF of 21, 90, 34, 73?

Answer: GCF of 21, 90, 34, 73 is 1.

2. How to Find the GCF of 21, 90, 34, 73

Answer: Greatest Common Factor(GCF) of 21, 90, 34, 73 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 90, 34, 73) = 1.