Greatest Common Factor of 20, 30, 55

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

• Greatest Common Factor of 20, 30, 55 by common division method
• Greatest Common Factor of 20, 30, 55 with matching the biggest common factor

Maximum 4 Number can be enter but you can reset

∴ So the GCF of the given numbers is 5 = 5

Factors of 20

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

1,2,4,5,10,20

Factors of 30

List of positive integer factors of 30 that divides 30 without a remainder.

1,2,3,5,6,10,15,30

Factors of 55

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

1,5,11,55

Greatest Common Factor

We found the factors 20,30,55 . The biggest common factor number is the GCF number.
So the greatest common factor 20,30,55 is 5.

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

• GCF of 55, 16, 24
• GCF of 38, 40, 19
• GCF of 91, 19, 50
• GCF of 80, 64, 77
• GCF of 42, 15, 80

1. What is the GCF of 20, 30, 55?

Answer: GCF of 20, 30, 55 is 5.

2. How to Find the GCF of 20, 30, 55

Answer: Greatest Common Factor(GCF) of 20, 30, 55 = 5

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

Step 2: Then multiply all the prime factors GCF(20, 30, 55) = 5.