Greatest Common Factor of 18, 81, 55, 356

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

• Greatest Common Factor of 18, 81, 55, 356 by common division method
• Greatest Common Factor of 18, 81, 55, 356 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 18

List of positive integer factors of 18 that divides 18 without a remainder.

1,2,3,6,9,18

Factors of 81

List of positive integer factors of 81 that divides 81 without a remainder.

1,3,9,27,81

Factors of 55

List of positive integer factors of 55 that divides 55 without a remainder.

1,5,11,55

Factors of 356

List of positive integer factors of 356 that divides 356 without a remainder.

1,2,4,89,178,356

Greatest Common Factor

We found the factors 18,81,55,356 . The biggest common factor number is the GCF number.
So the greatest common factor 18,81,55,356 is 1.

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

• GCF of 68, 66, 26, 266
• GCF of 90, 67, 98, 833
• GCF of 63, 97, 74, 336
• GCF of 64, 58, 30, 389
• GCF of 10, 86, 67, 237

1. What is the GCF of 18, 81, 55, 356?

Answer: GCF of 18, 81, 55, 356 is 1.

2. How to Find the GCF of 18, 81, 55, 356

Answer: Greatest Common Factor(GCF) of 18, 81, 55, 356 = 1

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

Step 2: Then multiply all the prime factors GCF(18, 81, 55, 356) = 1.