Greatest Common Factor of 30, 855, 720

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

• Greatest Common Factor of 30, 855, 720 by common division method
• Greatest Common Factor of 30, 855, 720 with matching the biggest common factor

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∴ So the GCF of the given numbers is 3 x 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

Factors of 855

List of positive integer factors of 855 that divides 855 without a remainder.

1,3,5,9,15,19,45,57,95,171,285,855

Factors of 720

List of positive integer factors of 720 that divides 720 without a remainder.

1,2,3,4,5,6,8,9,10,12,15,16,18,20,24,30,36,40,45,48,60,72,80,90,120,144,180,240,360,720

Greatest Common Factor

We found the factors 30,855,720 . The biggest common factor number is the GCF number.
So the greatest common factor 30,855,720 is 15.

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

• GCF of 58, 456, 498
• GCF of 38, 473, 836
• GCF of 22, 394, 471
• GCF of 87, 308, 577
• GCF of 81, 319, 690

1. What is the GCF of 30, 855, 720?

Answer: GCF of 30, 855, 720 is 15.

2. How to Find the GCF of 30, 855, 720

Answer: Greatest Common Factor(GCF) of 30, 855, 720 = 15

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

Step 2: Then multiply all the prime factors GCF(30, 855, 720) = 15.