1. A document analysis system comprising: an image processing apparatus; and an analysis server, wherein the image processing apparatus comprises: a first transmission unit configured to divide image data obtained. by scanning a document including a plurality of pages for each page and transmit the divided image data to the analysis server; a reception unit configured to receive a storage destination candidate of the image data from the analysis server; a selection unit configured to present the storage destination candidate received by the reception unit and enable selection. of a storage destination; and a second transmission unit configured to transmit the image data obtained. by scanning the document including the plurality of pages as one file to the storage destination selected by the selection unit so as to be stored therein, and wherein the analysis server comprises: an analysis unit configured to sequentially analyze, page-by-page, the image data transmitted. from the first transmission unit; and a reply unit configured to, when the analysis unit determines a storage destination. candidate of the image data, return the determined storage destination candidate of the image data to the image processing apparatus.