Given that M=2*3*7, how many divisors of M are there?
已知M=2*3*7，那么M的全部约数的个数有多少个．
<gadget id="calculator">1 + 1</gadget>
<output>2</output>

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

<result>8</result>