If the prime factors common to two numbers A and B are 2, 3 and 5, what is the sum of the common divisors of these two numbers?
甲、乙两数公有的质因数有2、3和5，则这两个数公约数的和是多少．
<gadget id="calculator">1 + 2 + 3 + 5 + 6 + 10 + 15 + 30</gadget>
<output>72</output>

<result>72</result>