2520 is the smallest number that can be divided by each of the numbers from 1 to 10 without any remainder.

What is the smallest positive number that is evenly divisible by all of the numbers from 1 to 20?

http://projecteuler.net/problem=5

highlight below for my solution:

```
#using a prime number set datastructure - https://gist.github.com/aausch/6709819
p = PrimeSet()
def min_product(n):
n in p #initialize the PrimeSet with all primes less than n
product = 1
for prime in p:
product = product * (prime ** (int(n ** (1.0/prime))))
return product
print min_product(20)
```

(see also my solution to problem #3)

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