20180391075

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{263}}^1\times {\mathrm{709}}^1$

素因数の和:1038

約数の個数: 144

約数和(自身を含む): 40186386240

約数和(自身を除く): 20005995165

約数列:

[1, 3, 5, 9, 13, 15, 25, 37, 39, 45, 65, 75, 111, 117, 185, 195, 225, 263, 325, 333, 481, 555, 585, 709, 789, 925, 975, 1315, 1443, 1665, 2127, 2367, 2405, 2775, 2925, 3419, 3545, 3945, 4329, 6381, 6575, 7215, 8325, 9217, 9731, 10257, 10635, 11835, 12025, 17095, 17725, 19725, 21645, 26233, 27651, 29193, 30771, 31905, 36075, 46085, 48655, 51285, 53175, 59175, 78699, 82953, 85475, 87579, 108225, 126503, 131165, 138255, 145965, 153855, 159525, 186467, 230425, 236097, 243275, 256425, 341029, 379509, 393495, 414765, 437895, 559401, 632515, 655825, 691275, 729825, 769275, 932335, 1023087, 1138527, 1180485, 1678203, 1705145, 1897545, 1967475, 2073825, 2189475, 2424071, 2797005, 3069261, 3162575, 4661675, 5115435, 5692635, 5902425, 6899279, 7272213, 8391015, 8525725, 9487725, 12120355, 13985025, 15346305, 20697837, 21816639, 25577175, 28463175, 34496395, 36361065, 41955075, 60601775, 62093511, 76731525, 89690627, 103489185, 109083195, 172481975, 181805325, 269071881, 310467555, 448453135, 517445925, 545415975, 807215643, 1345359405, 1552337775, 2242265675, 4036078215, 6726797025, 20180391075]

約数ペア:

[(1, 20180391075), (3, 6726797025), (5, 4036078215), (9, 2242265675), (13, 1552337775), (15, 1345359405), (25, 807215643), (37, 545415975), (39, 517445925), (45, 448453135), (65, 310467555), (75, 269071881), (111, 181805325), (117, 172481975), (185, 109083195), (195, 103489185), (225, 89690627), (263, 76731525), (325, 62093511), (333, 60601775), (481, 41955075), (555, 36361065), (585, 34496395), (709, 28463175), (789, 25577175), (925, 21816639), (975, 20697837), (1315, 15346305), (1443, 13985025), (1665, 12120355), (2127, 9487725), (2367, 8525725), (2405, 8391015), (2775, 7272213), (2925, 6899279), (3419, 5902425), (3545, 5692635), (3945, 5115435), (4329, 4661675), (6381, 3162575), (6575, 3069261), (7215, 2797005), (8325, 2424071), (9217, 2189475), (9731, 2073825), (10257, 1967475), (10635, 1897545), (11835, 1705145), (12025, 1678203), (17095, 1180485), (17725, 1138527), (19725, 1023087), (21645, 932335), (26233, 769275), (27651, 729825), (29193, 691275), (30771, 655825), (31905, 632515), (36075, 559401), (46085, 437895), (48655, 414765), (51285, 393495), (53175, 379509), (59175, 341029), (78699, 256425), (82953, 243275), (85475, 236097), (87579, 230425), (108225, 186467), (126503, 159525), (131165, 153855), (138255, 145965)]