Greatest Common Factor of 18, 81, 12, 747

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

• Greatest Common Factor of 18, 81, 12, 747 by common division method
• Greatest Common Factor of 18, 81, 12, 747 with matching the biggest common factor

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

Factors of 18

List of positive integer factors of 18 that divides 18 without a remainder.

1,2,3,6,9,18

Factors of 81

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

1,3,9,27,81

Factors of 12

List of positive integer factors of 12 that divides 12 without a remainder.

1,2,3,4,6,12

Factors of 747

List of positive integer factors of 747 that divides 747 without a remainder.

1,3,9,83,249,747

Greatest Common Factor

We found the factors 18,81,12,747 . The biggest common factor number is the GCF number.
So the greatest common factor 18,81,12,747 is 3.

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

• GCF of 85, 81, 27, 761
• GCF of 10, 87, 12, 232
• GCF of 99, 15, 76, 707
• GCF of 93, 70, 47, 480
• GCF of 15, 61, 84, 762

1. What is the GCF of 18, 81, 12, 747?

Answer: GCF of 18, 81, 12, 747 is 3.

2. How to Find the GCF of 18, 81, 12, 747

Answer: Greatest Common Factor(GCF) of 18, 81, 12, 747 = 3

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

Step 2: Then multiply all the prime factors GCF(18, 81, 12, 747) = 3.