Greatest Common Factor of 18, 42, 64, 768

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

• Greatest Common Factor of 18, 42, 64, 768 by common division method
• Greatest Common Factor of 18, 42, 64, 768 with matching the biggest common factor

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∴ So the GCF of the given numbers is 2 = 2

Factors of 18

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

1,2,3,6,9,18

Factors of 42

List of positive integer factors of 42 that divides 42 without a remainder.

1,2,3,6,7,14,21,42

Factors of 64

List of positive integer factors of 64 that divides 64 without a remainder.

1,2,4,8,16,32,64

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 18,42,64,768 . The biggest common factor number is the GCF number.
So the greatest common factor 18,42,64,768 is 2.

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

• GCF of 88, 63, 14, 120
• GCF of 62, 89, 73, 243
• GCF of 86, 42, 50, 171
• GCF of 73, 65, 17, 152
• GCF of 42, 93, 25, 244

1. What is the GCF of 18, 42, 64, 768?

Answer: GCF of 18, 42, 64, 768 is 2.

2. How to Find the GCF of 18, 42, 64, 768

Answer: Greatest Common Factor(GCF) of 18, 42, 64, 768 = 2

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

Step 2: Then multiply all the prime factors GCF(18, 42, 64, 768) = 2.