Greatest Common Factor of 98, 20, 85, 405

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

• Greatest Common Factor of 98, 20, 85, 405 by common division method
• Greatest Common Factor of 98, 20, 85, 405 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 98

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

1,2,7,14,49,98

Factors of 20

List of positive integer factors of 20 that divides 20 without a remainder.

1,2,4,5,10,20

Factors of 85

List of positive integer factors of 85 that divides 85 without a remainder.

1,5,17,85

Factors of 405

List of positive integer factors of 405 that divides 405 without a remainder.

1,3,5,9,15,27,45,81,135,405

Greatest Common Factor

We found the factors 98,20,85,405 . The biggest common factor number is the GCF number.
So the greatest common factor 98,20,85,405 is 1.

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

• GCF of 71, 51, 32, 477
• GCF of 38, 82, 13, 138
• GCF of 86, 55, 42, 536
• GCF of 56, 88, 58, 168
• GCF of 39, 59, 51, 319

1. What is the GCF of 98, 20, 85, 405?

Answer: GCF of 98, 20, 85, 405 is 1.

2. How to Find the GCF of 98, 20, 85, 405

Answer: Greatest Common Factor(GCF) of 98, 20, 85, 405 = 1

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

Step 2: Then multiply all the prime factors GCF(98, 20, 85, 405) = 1.