Greatest Common Factor of 18, 66, 27, 780

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

• Greatest Common Factor of 18, 66, 27, 780 by common division method
• Greatest Common Factor of 18, 66, 27, 780 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 66

List of positive integer factors of 66 that divides 66 without a remainder.

1,2,3,6,11,22,33,66

Factors of 27

List of positive integer factors of 27 that divides 27 without a remainder.

1,3,9,27

Factors of 780

List of positive integer factors of 780 that divides 780 without a remainder.

1,2,3,4,5,6,10,12,13,15,20,26,30,39,52,60,65,78,130,156,195,260,390,780

Greatest Common Factor

We found the factors 18,66,27,780 . The biggest common factor number is the GCF number.
So the greatest common factor 18,66,27,780 is 3.

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

• GCF of 55, 88, 32, 489
• GCF of 50, 30, 81, 678
• GCF of 56, 93, 61, 466
• GCF of 96, 84, 80, 342
• GCF of 93, 98, 89, 207

1. What is the GCF of 18, 66, 27, 780?

Answer: GCF of 18, 66, 27, 780 is 3.

2. How to Find the GCF of 18, 66, 27, 780

Answer: Greatest Common Factor(GCF) of 18, 66, 27, 780 = 3

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

Step 2: Then multiply all the prime factors GCF(18, 66, 27, 780) = 3.