Greatest Common Factor of 21, 60, 15, 58

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

• Greatest Common Factor of 21, 60, 15, 58 by common division method
• Greatest Common Factor of 21, 60, 15, 58 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 60

List of positive integer factors of 60 that divides 60 without a remainder.

1,2,3,4,5,6,10,12,15,20,30,60

Factors of 15

List of positive integer factors of 15 that divides 15 without a remainder.

1,3,5,15

Factors of 58

List of positive integer factors of 58 that divides 58 without a remainder.

1,2,29,58

Greatest Common Factor

We found the factors 21,60,15,58 . The biggest common factor number is the GCF number.
So the greatest common factor 21,60,15,58 is 1.

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

• GCF of 70, 33, 22, 64
• GCF of 62, 72, 28, 35
• GCF of 70, 49, 52, 25
• GCF of 33, 26, 54, 73
• GCF of 15, 55, 95, 85

1. What is the GCF of 21, 60, 15, 58?

Answer: GCF of 21, 60, 15, 58 is 1.

2. How to Find the GCF of 21, 60, 15, 58

Answer: Greatest Common Factor(GCF) of 21, 60, 15, 58 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 60, 15, 58) = 1.