A first-region allocating unit of an electronic device allocates a first region having a size required for a first process. The first process includes at least one second process in a region of the memory. A second-region dividing unit divides a second region having a size required for the second process by the second process. A region-for-release dividing unit divides a region for release from the first region when the second-region dividing unit has allocated the second regions for all the second processes included in the first process. The region for release is a region other than the second region and to be released. The second-region dividing unit divides the second region regardless of a page basis used as a unit in the memory management. The region-for-release dividing unit divides the region for release on the page basis.