Greatest Common Factor of 81, 90, 105

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

• Greatest Common Factor of 81, 90, 105 by common division method
• Greatest Common Factor of 81, 90, 105 with matching the biggest common factor

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

Factors of 81

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

1,3,9,27,81

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 105

List of positive integer factors of 105 that divides 105 without a remainder.

1,3,5,7,15,21,35,105

Greatest Common Factor

We found the factors 81,90,105 . The biggest common factor number is the GCF number.
So the greatest common factor 81,90,105 is 3.

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

• GCF of 23, 80, 740
• GCF of 20, 36, 547
• GCF of 54, 57, 908
• GCF of 51, 22, 493
• GCF of 32, 44, 956

1. What is the GCF of 81, 90, 105?

Answer: GCF of 81, 90, 105 is 3.

2. How to Find the GCF of 81, 90, 105

Answer: Greatest Common Factor(GCF) of 81, 90, 105 = 3

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

Step 2: Then multiply all the prime factors GCF(81, 90, 105) = 3.