Greatest Common Factor of 81, 28, 42, 435

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

• Greatest Common Factor of 81, 28, 42, 435 by common division method
• Greatest Common Factor of 81, 28, 42, 435 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 28

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

1,2,4,7,14,28

Factors of 42

List of positive integer factors of 42 that divides 42 without a remainder.

1,2,3,6,7,14,21,42

Factors of 435

List of positive integer factors of 435 that divides 435 without a remainder.

1,3,5,15,29,87,145,435

Greatest Common Factor

We found the factors 81,28,42,435 . The biggest common factor number is the GCF number.
So the greatest common factor 81,28,42,435 is 1.

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

• GCF of 63, 62, 19, 895
• GCF of 13, 84, 40, 378
• GCF of 10, 95, 83, 741
• GCF of 58, 82, 29, 622
• GCF of 72, 84, 57, 609

1. What is the GCF of 81, 28, 42, 435?

Answer: GCF of 81, 28, 42, 435 is 1.

2. How to Find the GCF of 81, 28, 42, 435

Answer: Greatest Common Factor(GCF) of 81, 28, 42, 435 = 1

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

Step 2: Then multiply all the prime factors GCF(81, 28, 42, 435) = 1.