What is the smallest positive integer which when increased by 1 is divisible by 22, 36, 26 and 21?	Choose the correct choice from the following answers.
A) 7271	B) 36035	C) 122149	D) 22362621	E) 4109
22 = 2*11   36 = 2 * 2 * 3 * 3   26 = 2 * 13   21 = 3 * 7   So the answer is   (2 * 2 * 3 * 3 * 7 * 11 * 13) - 1= 
<gadget id="calculator">  (2 * 2 * 3 * 3 * 7 * 11 * 13) - 1</gadget>
<output>36_035</output>
36035, which is option 36035.
<result>B</result>
What is the smallest positive integer which when increased by 1 is divisible by 22, 36, 26 and 21?