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?
程序比较好编，就是考验计算机。最大范围也是预估的，边写边调。
尽管算对了，但方式可能不对。
def div2(n,x):
isDiv = True
for i in xrange(2,n):
if x % i != 0 :
isDiv = False
break
return isDiv
for i in xrange(2,1772146456):
if div2(21,i) == True:
print i
break
输出：
C:\webpy\webpy\Scripts\python.exe C:/pycode/euler.py
232792560
Process finished with exit code 0
后来请高手重新写了一个，这个就很正规了。
def getSmallestNum(m,n):
for j in range(1,n):
if( m*j%n ==0 ):
return m*j
return m*n
smallestNum = 1
for i in range(2,21):
if(smallestNum%i !=0):
smallestNum = getSmallestNum(smallestNum,i)
print smallestNum