Greatest Common Factor of 18, 85, 28, 720

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

• Greatest Common Factor of 18, 85, 28, 720 by common division method
• Greatest Common Factor of 18, 85, 28, 720 with matching the biggest common factor

Maximum 4 Number can be enter but you can reset

∴ 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 85

List of positive integer factors of 85 that divides 85 without a remainder.

1,5,17,85

Factors of 28

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

1,2,4,7,14,28

Factors of 720

List of positive integer factors of 720 that divides 720 without a remainder.

1,2,3,4,5,6,8,9,10,12,15,16,18,20,24,30,36,40,45,48,60,72,80,90,120,144,180,240,360,720

Greatest Common Factor

We found the factors 18,85,28,720 . The biggest common factor number is the GCF number.
So the greatest common factor 18,85,28,720 is 1.

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

• GCF of 65, 95, 99, 295
• GCF of 73, 65, 84, 544
• GCF of 17, 51, 35, 910
• GCF of 38, 39, 95, 183
• GCF of 13, 84, 63, 407

1. What is the GCF of 18, 85, 28, 720?

Answer: GCF of 18, 85, 28, 720 is 1.

2. How to Find the GCF of 18, 85, 28, 720

Answer: Greatest Common Factor(GCF) of 18, 85, 28, 720 = 1

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

Step 2: Then multiply all the prime factors GCF(18, 85, 28, 720) = 1.