Greatest Common Factor of 87, 42, 31, 15, 648

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

• Greatest Common Factor of 87, 42, 31, 15, 648 by common division method
• Greatest Common Factor of 87, 42, 31, 15, 648 with matching the biggest common factor

Maximum 4 Number can be enter but you can reset

∴ GCF of numbers is 1 because of no common factors present between them.

Factors of 87

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

1,3,29,87

Factors of 42

List of positive integer factors of 42 that divides 42 without a remainder.

1,2,3,6,7,14,21,42

Factors of 31

List of positive integer factors of 31 that divides 31 without a remainder.

1,31

Factors of 15

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

1,3,5,15

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 87,42,31,15,648 . The biggest common factor number is the GCF number.
So the greatest common factor 87,42,31,15,648 is 1.

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

• GCF of 95, 55, 11, 97, 923
• GCF of 24, 38, 40, 94, 610
• GCF of 73, 27, 51, 66, 963
• GCF of 72, 61, 82, 39, 910
• GCF of 64, 92, 39, 28, 446

1. What is the GCF of 87, 42, 31, 15, 648?

Answer: GCF of 87, 42, 31, 15, 648 is 1.

2. How to Find the GCF of 87, 42, 31, 15, 648

Answer: Greatest Common Factor(GCF) of 87, 42, 31, 15, 648 = 1

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

Step 2: Then multiply all the prime factors GCF(87, 42, 31, 15, 648) = 1.