Greatest Common Factor of 90, 12, 72, 45, 81

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

• Greatest Common Factor of 90, 12, 72, 45, 81 by common division method
• Greatest Common Factor of 90, 12, 72, 45, 81 with matching the biggest common factor

Maximum 4 Number can be enter but you can reset

∴ So the GCF of the given numbers is 3 = 3

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 12

List of positive integer factors of 12 that divides 12 without a remainder.

1,2,3,4,6,12

Factors of 72

List of positive integer factors of 72 that divides 72 without a remainder.

1,2,3,4,6,8,9,12,18,24,36,72

Factors of 45

List of positive integer factors of 45 that divides 45 without a remainder.

1,3,5,9,15,45

Factors of 81

List of positive integer factors of 81 that divides 81 without a remainder.

1,3,9,27,81

Greatest Common Factor

We found the factors 90,12,72,45,81 . The biggest common factor number is the GCF number.
So the greatest common factor 90,12,72,45,81 is 3.

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

• GCF of 92, 17, 42, 84, 74
• GCF of 38, 73, 91, 54, 18
• GCF of 87, 78, 90, 20, 35
• GCF of 85, 63, 33, 72, 23
• GCF of 70, 34, 74, 69, 69

1. What is the GCF of 90, 12, 72, 45, 81?

Answer: GCF of 90, 12, 72, 45, 81 is 3.

2. How to Find the GCF of 90, 12, 72, 45, 81

Answer: Greatest Common Factor(GCF) of 90, 12, 72, 45, 81 = 3

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

Step 2: Then multiply all the prime factors GCF(90, 12, 72, 45, 81) = 3.