Greatest Common Factor of 48, 21, 87, 170

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

• Greatest Common Factor of 48, 21, 87, 170 by common division method
• Greatest Common Factor of 48, 21, 87, 170 with matching the biggest common factor

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

Factors of 48

List of positive integer factors of 48 that divides 48 without a remainder.

1,2,3,4,6,8,12,16,24,48

Factors of 21

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

1,3,7,21

Factors of 87

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

1,3,29,87

Factors of 170

List of positive integer factors of 170 that divides 170 without a remainder.

1,2,5,10,17,34,85,170

Greatest Common Factor

We found the factors 48,21,87,170 . The biggest common factor number is the GCF number.
So the greatest common factor 48,21,87,170 is 1.

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

• GCF of 13, 25, 81, 756
• GCF of 19, 45, 22, 584
• GCF of 34, 53, 67, 845
• GCF of 84, 74, 40, 626
• GCF of 94, 77, 54, 249

1. What is the GCF of 48, 21, 87, 170?

Answer: GCF of 48, 21, 87, 170 is 1.

2. How to Find the GCF of 48, 21, 87, 170

Answer: Greatest Common Factor(GCF) of 48, 21, 87, 170 = 1

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

Step 2: Then multiply all the prime factors GCF(48, 21, 87, 170) = 1.