Greatest Common Factor of 20, 18, 385, 768

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

• Greatest Common Factor of 20, 18, 385, 768 by common division method
• Greatest Common Factor of 20, 18, 385, 768 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 20

List of positive integer factors of 20 that divides 20 without a remainder.

1,2,4,5,10,20

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

Factors of 768

List of positive integer factors of 768 that divides 768 without a remainder.

1,2,3,4,6,8,12,16,24,32,48,64,96,128,192,256,384,768

Greatest Common Factor

We found the factors 20,18,385,768 . The biggest common factor number is the GCF number.
So the greatest common factor 20,18,385,768 is 1.

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

• GCF of 11, 58, 620, 690
• GCF of 63, 77, 410, 710
• GCF of 31, 63, 864, 562
• GCF of 10, 20, 690, 720
• GCF of 17, 41, 176, 202

1. What is the GCF of 20, 18, 385, 768?

Answer: GCF of 20, 18, 385, 768 is 1.

2. How to Find the GCF of 20, 18, 385, 768

Answer: Greatest Common Factor(GCF) of 20, 18, 385, 768 = 1

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

Step 2: Then multiply all the prime factors GCF(20, 18, 385, 768) = 1.