Greatest Common Factor of 81, 90, 30, 838

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

• Greatest Common Factor of 81, 90, 30, 838 by common division method
• Greatest Common Factor of 81, 90, 30, 838 with matching the biggest common factor

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∴ GCF of numbers is 1 because of no common factors present between them.

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 30

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

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

Factors of 838

List of positive integer factors of 838 that divides 838 without a remainder.

1,2,419,838

Greatest Common Factor

We found the factors 81,90,30,838 . The biggest common factor number is the GCF number.
So the greatest common factor 81,90,30,838 is 1.

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

• GCF of 31, 75, 95, 115
• GCF of 21, 70, 63, 541
• GCF of 22, 46, 96, 986
• GCF of 69, 21, 23, 546
• GCF of 18, 46, 17, 616

1. What is the GCF of 81, 90, 30, 838?

Answer: GCF of 81, 90, 30, 838 is 1.

2. How to Find the GCF of 81, 90, 30, 838

Answer: Greatest Common Factor(GCF) of 81, 90, 30, 838 = 1

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

Step 2: Then multiply all the prime factors GCF(81, 90, 30, 838) = 1.