Greatest Common Factor of 288, 648, 21

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

• Greatest Common Factor of 288, 648, 21 by common division method
• Greatest Common Factor of 288, 648, 21 with matching the biggest common factor

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

Factors of 288

List of positive integer factors of 288 that divides 288 without a remainder.

1,2,3,4,6,8,9,12,16,18,24,32,36,48,72,96,144,288

Factors of 648

List of positive integer factors of 648 that divides 648 without a remainder.

1,2,3,4,6,8,9,12,18,24,27,36,54,72,81,108,162,216,324,648

Factors of 21

List of positive integer factors of 21 that divides 21 without a remainder.

1,3,7,21

Greatest Common Factor

We found the factors 288,648,21 . The biggest common factor number is the GCF number.
So the greatest common factor 288,648,21 is 3.

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

• GCF of 710, 977, 83
• GCF of 606, 598, 60
• GCF of 524, 576, 81
• GCF of 740, 328, 26
• GCF of 750, 713, 35

1. What is the GCF of 288, 648, 21?

Answer: GCF of 288, 648, 21 is 3.

2. How to Find the GCF of 288, 648, 21

Answer: Greatest Common Factor(GCF) of 288, 648, 21 = 3

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

Step 2: Then multiply all the prime factors GCF(288, 648, 21) = 3.