Greatest Common Factor of 72, 87, 15, 30

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

• Greatest Common Factor of 72, 87, 15, 30 by common division method
• Greatest Common Factor of 72, 87, 15, 30 with matching the biggest common factor

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∴ So the GCF of the given numbers is 3 = 3

Factors of 72

List of positive integer factors of 72 that divides 72 without a remainder.

1,2,3,4,6,8,9,12,18,24,36,72

Factors of 87

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

1,3,29,87

Factors of 15

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

1,3,5,15

Factors of 30

List of positive integer factors of 30 that divides 30 without a remainder.

1,2,3,5,6,10,15,30

Greatest Common Factor

We found the factors 72,87,15,30 . The biggest common factor number is the GCF number.
So the greatest common factor 72,87,15,30 is 3.

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

• GCF of 87, 10, 16, 84
• GCF of 43, 98, 43, 84
• GCF of 32, 72, 79, 17
• GCF of 53, 49, 22, 14
• GCF of 58, 20, 13, 12

1. What is the GCF of 72, 87, 15, 30?

Answer: GCF of 72, 87, 15, 30 is 3.

2. How to Find the GCF of 72, 87, 15, 30

Answer: Greatest Common Factor(GCF) of 72, 87, 15, 30 = 3

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

Step 2: Then multiply all the prime factors GCF(72, 87, 15, 30) = 3.