81487120

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{419}}^1$

素因数の和:473

約数の個数: 160

約数和(自身を含む): 236234880

約数和(自身を除く): 154747760

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 17, 20, 22, 26, 34, 40, 44, 52, 55, 65, 68, 80, 85, 88, 104, 110, 130, 136, 143, 170, 176, 187, 208, 220, 221, 260, 272, 286, 340, 374, 419, 440, 442, 520, 572, 680, 715, 748, 838, 880, 884, 935, 1040, 1105, 1144, 1360, 1430, 1496, 1676, 1768, 1870, 2095, 2210, 2288, 2431, 2860, 2992, 3352, 3536, 3740, 4190, 4420, 4609, 4862, 5447, 5720, 6704, 7123, 7480, 8380, 8840, 9218, 9724, 10894, 11440, 12155, 14246, 14960, 16760, 17680, 18436, 19448, 21788, 23045, 24310, 27235, 28492, 33520, 35615, 36872, 38896, 43576, 46090, 48620, 54470, 56984, 59917, 71230, 73744, 78353, 87152, 92180, 92599, 97240, 108940, 113968, 119834, 142460, 156706, 184360, 185198, 194480, 217880, 239668, 284920, 299585, 313412, 368720, 370396, 391765, 435760, 462995, 479336, 569840, 599170, 626824, 740792, 783530, 925990, 958672, 1018589, 1198340, 1253648, 1481584, 1567060, 1851980, 2037178, 2396680, 3134120, 3703960, 4074356, 4793360, 5092945, 6268240, 7407920, 8148712, 10185890, 16297424, 20371780, 40743560, 81487120]

約数ペア:

[(1, 81487120), (2, 40743560), (4, 20371780), (5, 16297424), (8, 10185890), (10, 8148712), (11, 7407920), (13, 6268240), (16, 5092945), (17, 4793360), (20, 4074356), (22, 3703960), (26, 3134120), (34, 2396680), (40, 2037178), (44, 1851980), (52, 1567060), (55, 1481584), (65, 1253648), (68, 1198340), (80, 1018589), (85, 958672), (88, 925990), (104, 783530), (110, 740792), (130, 626824), (136, 599170), (143, 569840), (170, 479336), (176, 462995), (187, 435760), (208, 391765), (220, 370396), (221, 368720), (260, 313412), (272, 299585), (286, 284920), (340, 239668), (374, 217880), (419, 194480), (440, 185198), (442, 184360), (520, 156706), (572, 142460), (680, 119834), (715, 113968), (748, 108940), (838, 97240), (880, 92599), (884, 92180), (935, 87152), (1040, 78353), (1105, 73744), (1144, 71230), (1360, 59917), (1430, 56984), (1496, 54470), (1676, 48620), (1768, 46090), (1870, 43576), (2095, 38896), (2210, 36872), (2288, 35615), (2431, 33520), (2860, 28492), (2992, 27235), (3352, 24310), (3536, 23045), (3740, 21788), (4190, 19448), (4420, 18436), (4609, 17680), (4862, 16760), (5447, 14960), (5720, 14246), (6704, 12155), (7123, 11440), (7480, 10894), (8380, 9724), (8840, 9218)]