64891840

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{821}}^1$

素因数の和:870

約数の個数: 112

約数和(自身を含む): 175381920

約数和(自身を除く): 110490080

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 32, 38, 40, 52, 64, 65, 76, 80, 95, 104, 130, 152, 160, 190, 208, 247, 260, 304, 320, 380, 416, 494, 520, 608, 760, 821, 832, 988, 1040, 1216, 1235, 1520, 1642, 1976, 2080, 2470, 3040, 3284, 3952, 4105, 4160, 4940, 6080, 6568, 7904, 8210, 9880, 10673, 13136, 15599, 15808, 16420, 19760, 21346, 26272, 31198, 32840, 39520, 42692, 52544, 53365, 62396, 65680, 77995, 79040, 85384, 106730, 124792, 131360, 155990, 170768, 202787, 213460, 249584, 262720, 311980, 341536, 405574, 426920, 499168, 623960, 683072, 811148, 853840, 998336, 1013935, 1247920, 1622296, 1707680, 2027870, 2495840, 3244592, 3415360, 4055740, 4991680, 6489184, 8111480, 12978368, 16222960, 32445920, 64891840]

約数ペア:

[(1, 64891840), (2, 32445920), (4, 16222960), (5, 12978368), (8, 8111480), (10, 6489184), (13, 4991680), (16, 4055740), (19, 3415360), (20, 3244592), (26, 2495840), (32, 2027870), (38, 1707680), (40, 1622296), (52, 1247920), (64, 1013935), (65, 998336), (76, 853840), (80, 811148), (95, 683072), (104, 623960), (130, 499168), (152, 426920), (160, 405574), (190, 341536), (208, 311980), (247, 262720), (260, 249584), (304, 213460), (320, 202787), (380, 170768), (416, 155990), (494, 131360), (520, 124792), (608, 106730), (760, 85384), (821, 79040), (832, 77995), (988, 65680), (1040, 62396), (1216, 53365), (1235, 52544), (1520, 42692), (1642, 39520), (1976, 32840), (2080, 31198), (2470, 26272), (3040, 21346), (3284, 19760), (3952, 16420), (4105, 15808), (4160, 15599), (4940, 13136), (6080, 10673), (6568, 9880), (7904, 8210)]