Greatest Common Factor of 21, 98, 170

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

• Greatest Common Factor of 21, 98, 170 by common division method
• Greatest Common Factor of 21, 98, 170 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 21

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

1,3,7,21

Factors of 98

List of positive integer factors of 98 that divides 98 without a remainder.

1,2,7,14,49,98

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 21,98,170 . The biggest common factor number is the GCF number.
So the greatest common factor 21,98,170 is 1.

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

• GCF of 87, 56, 421
• GCF of 65, 29, 686
• GCF of 30, 82, 814
• GCF of 85, 56, 725
• GCF of 23, 54, 633

1. What is the GCF of 21, 98, 170?

Answer: GCF of 21, 98, 170 is 1.

2. How to Find the GCF of 21, 98, 170

Answer: Greatest Common Factor(GCF) of 21, 98, 170 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 98, 170) = 1.