1390388720

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{41}}^2\times {\mathrm{211}}^1$

素因数の和:320

約数の個数: 180

約数和(自身を含む): 3872656152

約数和(自身を除く): 2482267432

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 41, 49, 56, 70, 80, 82, 98, 112, 140, 164, 196, 205, 211, 245, 280, 287, 328, 392, 410, 422, 490, 560, 574, 656, 784, 820, 844, 980, 1055, 1148, 1435, 1477, 1640, 1681, 1688, 1960, 2009, 2110, 2296, 2870, 2954, 3280, 3362, 3376, 3920, 4018, 4220, 4592, 5740, 5908, 6724, 7385, 8036, 8405, 8440, 8651, 10045, 10339, 11480, 11767, 11816, 13448, 14770, 16072, 16810, 16880, 17302, 20090, 20678, 22960, 23534, 23632, 26896, 29540, 32144, 33620, 34604, 40180, 41356, 43255, 47068, 51695, 58835, 59080, 60557, 67240, 69208, 80360, 82369, 82712, 86510, 94136, 103390, 117670, 118160, 121114, 134480, 138416, 160720, 164738, 165424, 173020, 188272, 206780, 235340, 242228, 302785, 329476, 346040, 354691, 411845, 413560, 423899, 470680, 484456, 605570, 658952, 692080, 709382, 823690, 827120, 847798, 941360, 968912, 1211140, 1317904, 1418764, 1647380, 1695596, 1773455, 2119495, 2422280, 2482837, 2837528, 3294760, 3391192, 3546910, 4238990, 4844560, 4965674, 5675056, 6589520, 6782384, 7093820, 8477980, 9931348, 12414185, 14187640, 16955960, 17379859, 19862696, 24828370, 28375280, 33911920, 34759718, 39725392, 49656740, 69519436, 86899295, 99313480, 139038872, 173798590, 198626960, 278077744, 347597180, 695194360, 1390388720]

約数ペア:

[(1, 1390388720), (2, 695194360), (4, 347597180), (5, 278077744), (7, 198626960), (8, 173798590), (10, 139038872), (14, 99313480), (16, 86899295), (20, 69519436), (28, 49656740), (35, 39725392), (40, 34759718), (41, 33911920), (49, 28375280), (56, 24828370), (70, 19862696), (80, 17379859), (82, 16955960), (98, 14187640), (112, 12414185), (140, 9931348), (164, 8477980), (196, 7093820), (205, 6782384), (211, 6589520), (245, 5675056), (280, 4965674), (287, 4844560), (328, 4238990), (392, 3546910), (410, 3391192), (422, 3294760), (490, 2837528), (560, 2482837), (574, 2422280), (656, 2119495), (784, 1773455), (820, 1695596), (844, 1647380), (980, 1418764), (1055, 1317904), (1148, 1211140), (1435, 968912), (1477, 941360), (1640, 847798), (1681, 827120), (1688, 823690), (1960, 709382), (2009, 692080), (2110, 658952), (2296, 605570), (2870, 484456), (2954, 470680), (3280, 423899), (3362, 413560), (3376, 411845), (3920, 354691), (4018, 346040), (4220, 329476), (4592, 302785), (5740, 242228), (5908, 235340), (6724, 206780), (7385, 188272), (8036, 173020), (8405, 165424), (8440, 164738), (8651, 160720), (10045, 138416), (10339, 134480), (11480, 121114), (11767, 118160), (11816, 117670), (13448, 103390), (14770, 94136), (16072, 86510), (16810, 82712), (16880, 82369), (17302, 80360), (20090, 69208), (20678, 67240), (22960, 60557), (23534, 59080), (23632, 58835), (26896, 51695), (29540, 47068), (32144, 43255), (33620, 41356), (34604, 40180)]