Xiaoming's storage room has a floor length of 16dm and a width of 12dm. If you want to use square floor tiles whose side length is an integer number of decimeters to cover the floor of the storage room (the floor tiles used are all in one piece), can you choose a floor tile with a maximum side length of a few decimeters?
小明家贮藏室地面长16dm，宽12dm．如果要用边长是整分米数的正方形地板砖把贮藏室的地面铺满(使用的地砖都是整块的)，可以选择边长最大是几分米的地板砖来铺？
<gadget id="calculator">2 * 2</gadget>
<output>4</output>

<result>4</result>