Greatest Common Factor of 21, 19, 84, 166

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

• Greatest Common Factor of 21, 19, 84, 166 by common division method
• Greatest Common Factor of 21, 19, 84, 166 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 21

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

1,3,7,21

Factors of 19

List of positive integer factors of 19 that divides 19 without a remainder.

1,19

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 166

List of positive integer factors of 166 that divides 166 without a remainder.

1,2,83,166

Greatest Common Factor

We found the factors 21,19,84,166 . The biggest common factor number is the GCF number.
So the greatest common factor 21,19,84,166 is 1.

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

• GCF of 17, 96, 58, 631
• GCF of 15, 31, 16, 960
• GCF of 25, 78, 97, 612
• GCF of 96, 37, 34, 267
• GCF of 39, 29, 33, 340

1. What is the GCF of 21, 19, 84, 166?

Answer: GCF of 21, 19, 84, 166 is 1.

2. How to Find the GCF of 21, 19, 84, 166

Answer: Greatest Common Factor(GCF) of 21, 19, 84, 166 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 19, 84, 166) = 1.