Greatest Common Factor of 81, 70, 64, 385

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

• Greatest Common Factor of 81, 70, 64, 385 by common division method
• Greatest Common Factor of 81, 70, 64, 385 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 70

List of positive integer factors of 70 that divides 70 without a remainder.

1,2,5,7,10,14,35,70

Factors of 64

List of positive integer factors of 64 that divides 64 without a remainder.

1,2,4,8,16,32,64

Factors of 385

List of positive integer factors of 385 that divides 385 without a remainder.

1,5,7,11,35,55,77,385

Greatest Common Factor

We found the factors 81,70,64,385 . The biggest common factor number is the GCF number.
So the greatest common factor 81,70,64,385 is 1.

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

• GCF of 20, 36, 11, 589
• GCF of 36, 54, 90, 136
• GCF of 64, 37, 80, 755
• GCF of 52, 71, 36, 250
• GCF of 92, 37, 97, 782

1. What is the GCF of 81, 70, 64, 385?

Answer: GCF of 81, 70, 64, 385 is 1.

2. How to Find the GCF of 81, 70, 64, 385

Answer: Greatest Common Factor(GCF) of 81, 70, 64, 385 = 1

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

Step 2: Then multiply all the prime factors GCF(81, 70, 64, 385) = 1.