81072400

素因数分解:

$2^4\times 5^2\times {\mathrm{29}}^2\times {\mathrm{241}}^1$

素因数の和:317

約数の個数: 90

約数和(自身を含む): 202561502

約数和(自身を除く): 121489102

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 29, 40, 50, 58, 80, 100, 116, 145, 200, 232, 241, 290, 400, 464, 482, 580, 725, 841, 964, 1160, 1205, 1450, 1682, 1928, 2320, 2410, 2900, 3364, 3856, 4205, 4820, 5800, 6025, 6728, 6989, 8410, 9640, 11600, 12050, 13456, 13978, 16820, 19280, 21025, 24100, 27956, 33640, 34945, 42050, 48200, 55912, 67280, 69890, 84100, 96400, 111824, 139780, 168200, 174725, 202681, 279560, 336400, 349450, 405362, 559120, 698900, 810724, 1013405, 1397800, 1621448, 2026810, 2795600, 3242896, 4053620, 5067025, 8107240, 10134050, 16214480, 20268100, 40536200, 81072400]

約数ペア:

[(1, 81072400), (2, 40536200), (4, 20268100), (5, 16214480), (8, 10134050), (10, 8107240), (16, 5067025), (20, 4053620), (25, 3242896), (29, 2795600), (40, 2026810), (50, 1621448), (58, 1397800), (80, 1013405), (100, 810724), (116, 698900), (145, 559120), (200, 405362), (232, 349450), (241, 336400), (290, 279560), (400, 202681), (464, 174725), (482, 168200), (580, 139780), (725, 111824), (841, 96400), (964, 84100), (1160, 69890), (1205, 67280), (1450, 55912), (1682, 48200), (1928, 42050), (2320, 34945), (2410, 33640), (2900, 27956), (3364, 24100), (3856, 21025), (4205, 19280), (4820, 16820), (5800, 13978), (6025, 13456), (6728, 12050), (6989, 11600), (8410, 9640)]