Greatest Common Factor of 28, 30, 90, 56

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

• Greatest Common Factor of 28, 30, 90, 56 by common division method
• Greatest Common Factor of 28, 30, 90, 56 with matching the biggest common factor

Maximum 4 Number can be enter but you can reset

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

Factors of 28

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

1,2,4,7,14,28

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 90

List of positive integer factors of 90 that divides 90 without a remainder.

1,2,3,5,6,9,10,15,18,30,45,90

Factors of 56

List of positive integer factors of 56 that divides 56 without a remainder.

1,2,4,7,8,14,28,56

Greatest Common Factor

We found the factors 28,30,90,56 . The biggest common factor number is the GCF number.
So the greatest common factor 28,30,90,56 is 2.

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

• GCF of 74, 73, 21, 50
• GCF of 90, 91, 87, 31
• GCF of 29, 86, 87, 36
• GCF of 47, 51, 56, 13
• GCF of 87, 83, 40, 30

1. What is the GCF of 28, 30, 90, 56?

Answer: GCF of 28, 30, 90, 56 is 2.

2. How to Find the GCF of 28, 30, 90, 56

Answer: Greatest Common Factor(GCF) of 28, 30, 90, 56 = 2

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

Step 2: Then multiply all the prime factors GCF(28, 30, 90, 56) = 2.