Greatest Common Factor of 17, 38, 21, 355

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

• Greatest Common Factor of 17, 38, 21, 355 by common division method
• Greatest Common Factor of 17, 38, 21, 355 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 17

List of positive integer factors of 17 that divides 17 without a remainder.

1,17

Factors of 38

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

1,2,19,38

Factors of 21

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

1,3,7,21

Factors of 355

List of positive integer factors of 355 that divides 355 without a remainder.

1,5,71,355

Greatest Common Factor

We found the factors 17,38,21,355 . The biggest common factor number is the GCF number.
So the greatest common factor 17,38,21,355 is 1.

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

• GCF of 23, 61, 15, 260
• GCF of 18, 50, 54, 568
• GCF of 94, 57, 37, 645
• GCF of 36, 25, 52, 653
• GCF of 81, 49, 53, 933

1. What is the GCF of 17, 38, 21, 355?

Answer: GCF of 17, 38, 21, 355 is 1.

2. How to Find the GCF of 17, 38, 21, 355

Answer: Greatest Common Factor(GCF) of 17, 38, 21, 355 = 1

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

Step 2: Then multiply all the prime factors GCF(17, 38, 21, 355) = 1.