21390624

素因数分解:

$2^5\times 3^2\times {\mathrm{17}}^2\times {\mathrm{257}}^1$

素因数の和:307

約数の個数: 108

約数和(自身を含む): 64869714

約数和(自身を除く): 43479090

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 17, 18, 24, 32, 34, 36, 48, 51, 68, 72, 96, 102, 136, 144, 153, 204, 257, 272, 288, 289, 306, 408, 514, 544, 578, 612, 771, 816, 867, 1028, 1156, 1224, 1542, 1632, 1734, 2056, 2312, 2313, 2448, 2601, 3084, 3468, 4112, 4369, 4624, 4626, 4896, 5202, 6168, 6936, 8224, 8738, 9248, 9252, 10404, 12336, 13107, 13872, 17476, 18504, 20808, 24672, 26214, 27744, 34952, 37008, 39321, 41616, 52428, 69904, 74016, 74273, 78642, 83232, 104856, 139808, 148546, 157284, 209712, 222819, 297092, 314568, 419424, 445638, 594184, 629136, 668457, 891276, 1188368, 1258272, 1336914, 1782552, 2376736, 2673828, 3565104, 5347656, 7130208, 10695312, 21390624]

約数ペア:

[(1, 21390624), (2, 10695312), (3, 7130208), (4, 5347656), (6, 3565104), (8, 2673828), (9, 2376736), (12, 1782552), (16, 1336914), (17, 1258272), (18, 1188368), (24, 891276), (32, 668457), (34, 629136), (36, 594184), (48, 445638), (51, 419424), (68, 314568), (72, 297092), (96, 222819), (102, 209712), (136, 157284), (144, 148546), (153, 139808), (204, 104856), (257, 83232), (272, 78642), (288, 74273), (289, 74016), (306, 69904), (408, 52428), (514, 41616), (544, 39321), (578, 37008), (612, 34952), (771, 27744), (816, 26214), (867, 24672), (1028, 20808), (1156, 18504), (1224, 17476), (1542, 13872), (1632, 13107), (1734, 12336), (2056, 10404), (2312, 9252), (2313, 9248), (2448, 8738), (2601, 8224), (3084, 6936), (3468, 6168), (4112, 5202), (4369, 4896), (4624, 4626)]