80787520

素因数分解:

$2^6\times 5^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{389}}^1$

素因数の和:476

約数の個数: 112

約数和(自身を含む): 213969600

約数和(自身を除く): 133182080

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 59, 64, 80, 88, 110, 118, 160, 176, 220, 236, 295, 320, 352, 389, 440, 472, 590, 649, 704, 778, 880, 944, 1180, 1298, 1556, 1760, 1888, 1945, 2360, 2596, 3112, 3245, 3520, 3776, 3890, 4279, 4720, 5192, 6224, 6490, 7780, 8558, 9440, 10384, 12448, 12980, 15560, 17116, 18880, 20768, 21395, 22951, 24896, 25960, 31120, 34232, 41536, 42790, 45902, 51920, 62240, 68464, 85580, 91804, 103840, 114755, 124480, 136928, 171160, 183608, 207680, 229510, 252461, 273856, 342320, 367216, 459020, 504922, 684640, 734432, 918040, 1009844, 1262305, 1369280, 1468864, 1836080, 2019688, 2524610, 3672160, 4039376, 5049220, 7344320, 8078752, 10098440, 16157504, 20196880, 40393760, 80787520]

約数ペア:

[(1, 80787520), (2, 40393760), (4, 20196880), (5, 16157504), (8, 10098440), (10, 8078752), (11, 7344320), (16, 5049220), (20, 4039376), (22, 3672160), (32, 2524610), (40, 2019688), (44, 1836080), (55, 1468864), (59, 1369280), (64, 1262305), (80, 1009844), (88, 918040), (110, 734432), (118, 684640), (160, 504922), (176, 459020), (220, 367216), (236, 342320), (295, 273856), (320, 252461), (352, 229510), (389, 207680), (440, 183608), (472, 171160), (590, 136928), (649, 124480), (704, 114755), (778, 103840), (880, 91804), (944, 85580), (1180, 68464), (1298, 62240), (1556, 51920), (1760, 45902), (1888, 42790), (1945, 41536), (2360, 34232), (2596, 31120), (3112, 25960), (3245, 24896), (3520, 22951), (3776, 21395), (3890, 20768), (4279, 18880), (4720, 17116), (5192, 15560), (6224, 12980), (6490, 12448), (7780, 10384), (8558, 9440)]