1. A management device that manages a task that is executed by a plurality of users cooperatively, the management device comprising: an electronic data access unit configured to access electronic data; a management unit configured to manage, for each task executed using the management device, task information in which pieces of authentication information of the users who have participated in the task are associated with access destination information indicating an access destination of the electronic data accessed by the electronic data access unit in the task; and a past task storage unit configured to store therein the task information of a past task executed using the management device, wherein the management unit generates the task information of a new task based on the task information of the past task that is stored in the past task storage unit.