89999960

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{1499}}^1$

素因数の和:1608

約数の個数: 64

約数和(自身を含む): 216000000

約数和(自身を除く): 126000040

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 79, 95, 152, 158, 190, 316, 380, 395, 632, 760, 790, 1499, 1501, 1580, 2998, 3002, 3160, 5996, 6004, 7495, 7505, 11992, 12008, 14990, 15010, 28481, 29980, 30020, 56962, 59960, 60040, 113924, 118421, 142405, 227848, 236842, 284810, 473684, 569620, 592105, 947368, 1139240, 1184210, 2249999, 2368420, 4499998, 4736840, 8999996, 11249995, 17999992, 22499990, 44999980, 89999960]

約数ペア:

[(1, 89999960), (2, 44999980), (4, 22499990), (5, 17999992), (8, 11249995), (10, 8999996), (19, 4736840), (20, 4499998), (38, 2368420), (40, 2249999), (76, 1184210), (79, 1139240), (95, 947368), (152, 592105), (158, 569620), (190, 473684), (316, 284810), (380, 236842), (395, 227848), (632, 142405), (760, 118421), (790, 113924), (1499, 60040), (1501, 59960), (1580, 56962), (2998, 30020), (3002, 29980), (3160, 28481), (5996, 15010), (6004, 14990), (7495, 12008), (7505, 11992)]