How many factors of 180 are there?
180的因数共有多少个．
<gadget id="calculator">2 + 1</gadget>
<output>3</output>

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

<gadget id="calculator">3 * 3 * 2</gadget>
<output>18</output>

<result>18</result>