Among the two integers a and b, all the prime factors of a are 2, 3, 5, 7, 11; all the prime factors of b are 2, 3, 7, 13, then what is the greatest common divisor of a and b
在a与b两个整数中，a的所有的质因数2、3、5、7、11；b的所有质因数是2、3、7、13，那么a与b的最大公约数是多少
<gadget id="calculator">2 * 3 * 7</gadget>
<output>42</output>

<result>42</result>