title: Test and return number only if divisible by a range
body: <p>I am struggling to determine how to get an answer for the following problem. </p>
  
  <p>What I am attempting to do is take x in a list of numbers (eg 1 to 2,000,000) and divide by a certain range of numbers, y, for example 1 to 20 and return my x value only if it is divisible by all the numbers in the second list. </p>
  
  <p>I have tried the following but when I check the list I am trying to append to it returns a blank</p>
  
  <pre><code>divisibles = []
  
  def isdivisible(x):
      for i in range(1,21):
          if x%i!=0:
              return False
      return True
  
  for x in range(1,2000001):
      if isdivisible(x):
          divisibles.append(x) 
  </code></pre>
  
  <p>Please could someone help me. 
  I am generally struggling with testing for an all case in general.</p>
  
  <p>Thanks.</p>