Greatest Common Factor of 40, 84, 20, 385

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

• Greatest Common Factor of 40, 84, 20, 385 by common division method
• Greatest Common Factor of 40, 84, 20, 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 40

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

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

Factors of 84

List of positive integer factors of 84 that divides 84 without a remainder.

1,2,3,4,6,7,12,14,21,28,42,84

Factors of 20

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

1,2,4,5,10,20

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 40,84,20,385 . The biggest common factor number is the GCF number.
So the greatest common factor 40,84,20,385 is 1.

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

• GCF of 90, 68, 17, 889
• GCF of 89, 71, 25, 133
• GCF of 78, 41, 36, 155
• GCF of 38, 15, 81, 929
• GCF of 22, 26, 64, 844

1. What is the GCF of 40, 84, 20, 385?

Answer: GCF of 40, 84, 20, 385 is 1.

2. How to Find the GCF of 40, 84, 20, 385

Answer: Greatest Common Factor(GCF) of 40, 84, 20, 385 = 1

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

Step 2: Then multiply all the prime factors GCF(40, 84, 20, 385) = 1.