646391680

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{491}}^1$

素因数の和:549

約数の個数: 192

約数和(自身を含む): 1802107440

約数和(自身を除く): 1155715760

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 17, 20, 22, 32, 34, 40, 44, 55, 64, 68, 80, 85, 88, 110, 121, 128, 136, 160, 170, 176, 187, 220, 242, 272, 320, 340, 352, 374, 440, 484, 491, 544, 605, 640, 680, 704, 748, 880, 935, 968, 982, 1088, 1210, 1360, 1408, 1496, 1760, 1870, 1936, 1964, 2057, 2176, 2420, 2455, 2720, 2992, 3520, 3740, 3872, 3928, 4114, 4840, 4910, 5401, 5440, 5984, 7040, 7480, 7744, 7856, 8228, 8347, 9680, 9820, 10285, 10802, 10880, 11968, 14960, 15488, 15712, 16456, 16694, 19360, 19640, 20570, 21604, 23936, 27005, 29920, 31424, 32912, 33388, 38720, 39280, 41140, 41735, 43208, 54010, 59411, 59840, 62848, 65824, 66776, 77440, 78560, 82280, 83470, 86416, 91817, 108020, 118822, 119680, 131648, 133552, 157120, 164560, 166940, 172832, 183634, 216040, 237644, 263296, 267104, 297055, 314240, 329120, 333880, 345664, 367268, 432080, 459085, 475288, 534208, 594110, 658240, 667760, 691328, 734536, 864160, 918170, 950576, 1009987, 1068416, 1188220, 1316480, 1335520, 1469072, 1728320, 1836340, 1901152, 2019974, 2376440, 2671040, 2938144, 3456640, 3672680, 3802304, 4039948, 4752880, 5049935, 5342080, 5876288, 7345360, 7604608, 8079896, 9505760, 10099870, 11752576, 14690720, 16159792, 19011520, 20199740, 29381440, 32319584, 38023040, 40399480, 58762880, 64639168, 80798960, 129278336, 161597920, 323195840, 646391680]

約数ペア:

[(1, 646391680), (2, 323195840), (4, 161597920), (5, 129278336), (8, 80798960), (10, 64639168), (11, 58762880), (16, 40399480), (17, 38023040), (20, 32319584), (22, 29381440), (32, 20199740), (34, 19011520), (40, 16159792), (44, 14690720), (55, 11752576), (64, 10099870), (68, 9505760), (80, 8079896), (85, 7604608), (88, 7345360), (110, 5876288), (121, 5342080), (128, 5049935), (136, 4752880), (160, 4039948), (170, 3802304), (176, 3672680), (187, 3456640), (220, 2938144), (242, 2671040), (272, 2376440), (320, 2019974), (340, 1901152), (352, 1836340), (374, 1728320), (440, 1469072), (484, 1335520), (491, 1316480), (544, 1188220), (605, 1068416), (640, 1009987), (680, 950576), (704, 918170), (748, 864160), (880, 734536), (935, 691328), (968, 667760), (982, 658240), (1088, 594110), (1210, 534208), (1360, 475288), (1408, 459085), (1496, 432080), (1760, 367268), (1870, 345664), (1936, 333880), (1964, 329120), (2057, 314240), (2176, 297055), (2420, 267104), (2455, 263296), (2720, 237644), (2992, 216040), (3520, 183634), (3740, 172832), (3872, 166940), (3928, 164560), (4114, 157120), (4840, 133552), (4910, 131648), (5401, 119680), (5440, 118822), (5984, 108020), (7040, 91817), (7480, 86416), (7744, 83470), (7856, 82280), (8228, 78560), (8347, 77440), (9680, 66776), (9820, 65824), (10285, 62848), (10802, 59840), (10880, 59411), (11968, 54010), (14960, 43208), (15488, 41735), (15712, 41140), (16456, 39280), (16694, 38720), (19360, 33388), (19640, 32912), (20570, 31424), (21604, 29920), (23936, 27005)]