Greatest Common Factor of 30, 18, 405

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

• Greatest Common Factor of 30, 18, 405 by common division method
• Greatest Common Factor of 30, 18, 405 with matching the biggest common factor

Maximum 4 Number can be enter but you can reset

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

Factors of 30

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

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

Factors of 18

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

1,2,3,6,9,18

Factors of 405

List of positive integer factors of 405 that divides 405 without a remainder.

1,3,5,9,15,27,45,81,135,405

Greatest Common Factor

We found the factors 30,18,405 . The biggest common factor number is the GCF number.
So the greatest common factor 30,18,405 is 3.

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

• GCF of 61, 47, 837
• GCF of 68, 85, 845
• GCF of 51, 22, 955
• GCF of 86, 58, 861
• GCF of 79, 18, 572

1. What is the GCF of 30, 18, 405?

Answer: GCF of 30, 18, 405 is 3.

2. How to Find the GCF of 30, 18, 405

Answer: Greatest Common Factor(GCF) of 30, 18, 405 = 3

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

Step 2: Then multiply all the prime factors GCF(30, 18, 405) = 3.