Greatest Common Factor of 87, 21, 648

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

• Greatest Common Factor of 87, 21, 648 by common division method
• Greatest Common Factor of 87, 21, 648 with matching the biggest common factor

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

Factors of 87

List of positive integer factors of 87 that divides 87 without a remainder.

1,3,29,87

Factors of 21

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

1,3,7,21

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

Greatest Common Factor

We found the factors 87,21,648 . The biggest common factor number is the GCF number.
So the greatest common factor 87,21,648 is 3.

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

• GCF of 93, 81, 907
• GCF of 75, 96, 391
• GCF of 44, 60, 293
• GCF of 87, 34, 684
• GCF of 28, 11, 890

1. What is the GCF of 87, 21, 648?

Answer: GCF of 87, 21, 648 is 3.

2. How to Find the GCF of 87, 21, 648

Answer: Greatest Common Factor(GCF) of 87, 21, 648 = 3

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

Step 2: Then multiply all the prime factors GCF(87, 21, 648) = 3.