Congcong first finds all divisors of the natural number N, and then sums these numbers in pairs. It turns out that the smallest sum is 3, and the largest sum is 2010. Then what is the natural number N?
聪聪先求出自然数N的所有约数，再将这些数两两求和，结果发现，最小的和是3，最大的和是2010，那么这个自然数N是多少．
<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">670 * 2</gadget>
<output>1_340</output>

<result>1_340</result>