IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND STORAGE MEDIUM

An image processing apparatus capable of appropriately arranging a plurality of images of an output target in an output region is provided. For example, when the plurality of images is arranged in rows and columns by the arrangement unit, if there is a row or a column in which a number of images is less than a predetermined number of images, the number of images in the row or column is identified. Then, from the plurality of combinations, based on the number of images identified by the identification unit, for each of a plurality of combinations of number of rows and number of columns when the plurality of imaged is arranged, a combination of the number of rows and the number of columns is determined.