Greatest Common Factor of 15, 81, 33, 15

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

• Greatest Common Factor of 15, 81, 33, 15 by common division method
• Greatest Common Factor of 15, 81, 33, 15 with matching the biggest common factor

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

Factors of 15

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

1,3,5,15

Factors of 81

List of positive integer factors of 81 that divides 81 without a remainder.

1,3,9,27,81

Factors of 33

List of positive integer factors of 33 that divides 33 without a remainder.

1,3,11,33

Factors of 15

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

1,3,5,15

Greatest Common Factor

We found the factors 15,81,33,15 . The biggest common factor number is the GCF number.
So the greatest common factor 15,81,33,15 is 3.

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

• GCF of 45, 26, 39, 38
• GCF of 17, 73, 26, 90
• GCF of 47, 78, 91, 54
• GCF of 95, 98, 66, 85
• GCF of 13, 89, 98, 90

1. What is the GCF of 15, 81, 33, 15?

Answer: GCF of 15, 81, 33, 15 is 3.

2. How to Find the GCF of 15, 81, 33, 15

Answer: Greatest Common Factor(GCF) of 15, 81, 33, 15 = 3

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

Step 2: Then multiply all the prime factors GCF(15, 81, 33, 15) = 3.