128981125

素因数分解:

$5^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1$

素因数の和:104

約数の個数: 128

約数和(自身を含む): 226437120

約数和(自身を除く): 97455995

約数列:

[1, 5, 7, 13, 17, 23, 25, 29, 35, 65, 85, 91, 115, 119, 125, 145, 161, 175, 203, 221, 299, 325, 377, 391, 425, 455, 493, 575, 595, 667, 725, 805, 875, 1015, 1105, 1495, 1547, 1625, 1885, 1955, 2093, 2125, 2275, 2465, 2639, 2737, 2875, 2975, 3335, 3451, 3625, 4025, 4669, 5075, 5083, 5525, 6409, 7475, 7735, 8671, 9425, 9775, 10465, 11339, 11375, 12325, 13195, 13685, 14875, 16675, 17255, 20125, 23345, 25375, 25415, 27625, 32045, 35581, 37375, 38675, 43355, 44863, 47125, 48875, 52325, 56695, 60697, 61625, 65975, 68425, 79373, 83375, 86275, 116725, 127075, 147407, 160225, 177905, 193375, 216775, 224315, 261625, 283475, 303485, 329875, 342125, 396865, 431375, 583625, 635375, 737035, 801125, 889525, 1031849, 1083875, 1121575, 1417375, 1517425, 1984325, 3685175, 4447625, 5159245, 5607875, 7587125, 9921625, 18425875, 25796225, 128981125]

約数ペア:

[(1, 128981125), (5, 25796225), (7, 18425875), (13, 9921625), (17, 7587125), (23, 5607875), (25, 5159245), (29, 4447625), (35, 3685175), (65, 1984325), (85, 1517425), (91, 1417375), (115, 1121575), (119, 1083875), (125, 1031849), (145, 889525), (161, 801125), (175, 737035), (203, 635375), (221, 583625), (299, 431375), (325, 396865), (377, 342125), (391, 329875), (425, 303485), (455, 283475), (493, 261625), (575, 224315), (595, 216775), (667, 193375), (725, 177905), (805, 160225), (875, 147407), (1015, 127075), (1105, 116725), (1495, 86275), (1547, 83375), (1625, 79373), (1885, 68425), (1955, 65975), (2093, 61625), (2125, 60697), (2275, 56695), (2465, 52325), (2639, 48875), (2737, 47125), (2875, 44863), (2975, 43355), (3335, 38675), (3451, 37375), (3625, 35581), (4025, 32045), (4669, 27625), (5075, 25415), (5083, 25375), (5525, 23345), (6409, 20125), (7475, 17255), (7735, 16675), (8671, 14875), (9425, 13685), (9775, 13195), (10465, 12325), (11339, 11375)]