Greatest Common Factor of 28, 54, 18, 385

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

• Greatest Common Factor of 28, 54, 18, 385 by common division method
• Greatest Common Factor of 28, 54, 18, 385 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 28

List of positive integer factors of 28 that divides 28 without a remainder.

1,2,4,7,14,28

Factors of 54

List of positive integer factors of 54 that divides 54 without a remainder.

1,2,3,6,9,18,27,54

Factors of 18

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

1,2,3,6,9,18

Factors of 385

List of positive integer factors of 385 that divides 385 without a remainder.

1,5,7,11,35,55,77,385

Greatest Common Factor

We found the factors 28,54,18,385 . The biggest common factor number is the GCF number.
So the greatest common factor 28,54,18,385 is 1.

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

• GCF of 93, 58, 65, 288
• GCF of 63, 51, 97, 901
• GCF of 37, 21, 61, 991
• GCF of 55, 15, 12, 693
• GCF of 53, 37, 39, 239

1. What is the GCF of 28, 54, 18, 385?

Answer: GCF of 28, 54, 18, 385 is 1.

2. How to Find the GCF of 28, 54, 18, 385

Answer: Greatest Common Factor(GCF) of 28, 54, 18, 385 = 1

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

Step 2: Then multiply all the prime factors GCF(28, 54, 18, 385) = 1.