Greatest Common Factor of 27, 15, 24, 420

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

• Greatest Common Factor of 27, 15, 24, 420 by common division method
• Greatest Common Factor of 27, 15, 24, 420 with matching the biggest common factor

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

Factors of 27

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

1,3,9,27

Factors of 15

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

1,3,5,15

Factors of 24

List of positive integer factors of 24 that divides 24 without a remainder.

1,2,3,4,6,8,12,24

Factors of 420

List of positive integer factors of 420 that divides 420 without a remainder.

1,2,3,4,5,6,7,10,12,14,15,20,21,28,30,35,42,60,70,84,105,140,210,420

Greatest Common Factor

We found the factors 27,15,24,420 . The biggest common factor number is the GCF number.
So the greatest common factor 27,15,24,420 is 3.

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

• GCF of 11, 51, 42, 998
• GCF of 94, 16, 16, 861
• GCF of 86, 52, 18, 186
• GCF of 93, 30, 66, 649
• GCF of 30, 85, 68, 296

1. What is the GCF of 27, 15, 24, 420?

Answer: GCF of 27, 15, 24, 420 is 3.

2. How to Find the GCF of 27, 15, 24, 420

Answer: Greatest Common Factor(GCF) of 27, 15, 24, 420 = 3

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

Step 2: Then multiply all the prime factors GCF(27, 15, 24, 420) = 3.