The product of two natural numbers A and B is smaller than the square of A's number 2008. How many groups of natural numbers satisfy the above conditions?
甲、乙两个自然数的乘积比甲数的平方小2008．满足上述条件的自然数有几组？
<gadget id="calculator">3 + 1</gadget>
<output>4</output>

<gadget id="calculator">1 + 1</gadget>
<output>2</output>

<gadget id="calculator">4 * 2</gadget>
<output>8</output>

<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<result>4</result>