Greatest Common Factor of 63, 21, 84, 170

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

• Greatest Common Factor of 63, 21, 84, 170 by common division method
• Greatest Common Factor of 63, 21, 84, 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 63

List of positive integer factors of 63 that divides 63 without a remainder.

1,3,7,9,21,63

Factors of 21

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

1,3,7,21

Factors of 84

List of positive integer factors of 84 that divides 84 without a remainder.

1,2,3,4,6,7,12,14,21,28,42,84

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 63,21,84,170 . The biggest common factor number is the GCF number.
So the greatest common factor 63,21,84,170 is 1.

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

• GCF of 59, 33, 33, 989
• GCF of 92, 15, 68, 518
• GCF of 17, 45, 50, 198
• GCF of 68, 29, 89, 605
• GCF of 77, 29, 84, 682

1. What is the GCF of 63, 21, 84, 170?

Answer: GCF of 63, 21, 84, 170 is 1.

2. How to Find the GCF of 63, 21, 84, 170

Answer: Greatest Common Factor(GCF) of 63, 21, 84, 170 = 1

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

Step 2: Then multiply all the prime factors GCF(63, 21, 84, 170) = 1.