Greatest Common Factor of 81, 98, 65, 40

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

• Greatest Common Factor of 81, 98, 65, 40 by common division method
• Greatest Common Factor of 81, 98, 65, 40 with matching the biggest common factor

Maximum 4 Number can be enter but you can reset

∴ 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 98

List of positive integer factors of 98 that divides 98 without a remainder.

1,2,7,14,49,98

Factors of 65

List of positive integer factors of 65 that divides 65 without a remainder.

1,5,13,65

Factors of 40

List of positive integer factors of 40 that divides 40 without a remainder.

1,2,4,5,8,10,20,40

Greatest Common Factor

We found the factors 81,98,65,40 . The biggest common factor number is the GCF number.
So the greatest common factor 81,98,65,40 is 1.

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

• GCF of 60, 28, 12, 81
• GCF of 33, 86, 85, 43
• GCF of 35, 54, 35, 71
• GCF of 57, 41, 12, 87
• GCF of 89, 18, 10, 42

1. What is the GCF of 81, 98, 65, 40?

Answer: GCF of 81, 98, 65, 40 is 1.

2. How to Find the GCF of 81, 98, 65, 40

Answer: Greatest Common Factor(GCF) of 81, 98, 65, 40 = 1

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

Step 2: Then multiply all the prime factors GCF(81, 98, 65, 40) = 1.