Greatest Common Factor of 63, 21, 38, 165

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

• Greatest Common Factor of 63, 21, 38, 165 by common division method
• Greatest Common Factor of 63, 21, 38, 165 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 38

List of positive integer factors of 38 that divides 38 without a remainder.

1,2,19,38

Factors of 165

List of positive integer factors of 165 that divides 165 without a remainder.

1,3,5,11,15,33,55,165

Greatest Common Factor

We found the factors 63,21,38,165 . The biggest common factor number is the GCF number.
So the greatest common factor 63,21,38,165 is 1.

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

• GCF of 50, 74, 82, 716
• GCF of 87, 78, 37, 161
• GCF of 67, 15, 13, 600
• GCF of 69, 82, 96, 759
• GCF of 96, 94, 19, 326

1. What is the GCF of 63, 21, 38, 165?

Answer: GCF of 63, 21, 38, 165 is 1.

2. How to Find the GCF of 63, 21, 38, 165

Answer: Greatest Common Factor(GCF) of 63, 21, 38, 165 = 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, 38, 165) = 1.