20471264

素因数分解:

$2^5\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{311}}^1$

素因数の和:360

約数の個数: 72

約数和(自身を含む): 47056464

約数和(自身を除く): 26585200

約数列:

[1, 2, 4, 8, 11, 16, 17, 22, 32, 34, 44, 68, 88, 121, 136, 176, 187, 242, 272, 311, 352, 374, 484, 544, 622, 748, 968, 1244, 1496, 1936, 2057, 2488, 2992, 3421, 3872, 4114, 4976, 5287, 5984, 6842, 8228, 9952, 10574, 13684, 16456, 21148, 27368, 32912, 37631, 42296, 54736, 58157, 65824, 75262, 84592, 109472, 116314, 150524, 169184, 232628, 301048, 465256, 602096, 639727, 930512, 1204192, 1279454, 1861024, 2558908, 5117816, 10235632, 20471264]

約数ペア:

[(1, 20471264), (2, 10235632), (4, 5117816), (8, 2558908), (11, 1861024), (16, 1279454), (17, 1204192), (22, 930512), (32, 639727), (34, 602096), (44, 465256), (68, 301048), (88, 232628), (121, 169184), (136, 150524), (176, 116314), (187, 109472), (242, 84592), (272, 75262), (311, 65824), (352, 58157), (374, 54736), (484, 42296), (544, 37631), (622, 32912), (748, 27368), (968, 21148), (1244, 16456), (1496, 13684), (1936, 10574), (2057, 9952), (2488, 8228), (2992, 6842), (3421, 5984), (3872, 5287), (4114, 4976)]