Greatest Common Factor of 20, 40, 170

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

• Greatest Common Factor of 20, 40, 170 by common division method
• Greatest Common Factor of 20, 40, 170 with matching the biggest common factor

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∴ So the GCF of the given numbers is 2 x 5 = 10

Factors of 20

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

1,2,4,5,10,20

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 170

List of positive integer factors of 170 that divides 170 without a remainder.

1,2,5,10,17,34,85,170

Greatest Common Factor

We found the factors 20,40,170 . The biggest common factor number is the GCF number.
So the greatest common factor 20,40,170 is 10.

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

• GCF of 39, 39, 801
• GCF of 85, 55, 330
• GCF of 67, 24, 598
• GCF of 23, 63, 376
• GCF of 86, 16, 435

1. What is the GCF of 20, 40, 170?

Answer: GCF of 20, 40, 170 is 10.

2. How to Find the GCF of 20, 40, 170

Answer: Greatest Common Factor(GCF) of 20, 40, 170 = 10

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

Step 2: Then multiply all the prime factors GCF(20, 40, 170) = 10.