Divide a cube with an edge length of 5 cm into several small cubes, and the edge lengths of these small cubes must be whole centimeters. If these small cubes are not required to be equal in volume, how many small cubes can be divided at least.
把一个棱长是5厘米的正方体分割成若干个小正方体，这些小正方体的棱长必须是整厘米数．如果这些小正方体不要求体积都相等，那么最少可分成多少个小正方体．
<gadget id="calculator">1 + 7 + 42</gadget>
<output>50</output>

<result>50</result>