OBM 1992 Problem 5

Let $d(n)=\sum_{0<d|n}{1}$ . Show that, for any natural $n>1$ ,

$$\sum_{2 \leq i \leq n}{\frac{1}{i}} \leq \sum{\frac{d(i)}{n}} \leq \sum_{1 \leq i \leq n}{\frac{1}{i}}$$