There is a piece of colored paper with a length of 40cm and a width of 32cm. If you cut it into several squares of the same size without any surplus, what is the maximum side length that can be cut?
有一块长40cm，宽32cm的彩纸，把它剪成若干块大小相同的正方形而无剩余，可以剪得的最大边长是多少？
<gadget id="calculator">2 * 2 * 2</gadget>
<output>8</output>

<result>8</result>