171981880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{211}}^1$

素因数の和:341

約数の個数: 128

約数和(自身を含む): 461583360

約数和(自身を除く): 289601480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 41, 56, 70, 71, 82, 140, 142, 164, 205, 211, 280, 284, 287, 328, 355, 410, 422, 497, 568, 574, 710, 820, 844, 994, 1055, 1148, 1420, 1435, 1477, 1640, 1688, 1988, 2110, 2296, 2485, 2840, 2870, 2911, 2954, 3976, 4220, 4970, 5740, 5822, 5908, 7385, 8440, 8651, 9940, 11480, 11644, 11816, 14555, 14770, 14981, 17302, 19880, 20377, 23288, 29110, 29540, 29962, 34604, 40754, 43255, 58220, 59080, 59924, 60557, 69208, 74905, 81508, 86510, 101885, 104867, 116440, 119848, 121114, 149810, 163016, 173020, 203770, 209734, 242228, 299620, 302785, 346040, 407540, 419468, 484456, 524335, 599240, 605570, 614221, 815080, 838936, 1048670, 1211140, 1228442, 2097340, 2422280, 2456884, 3071105, 4194680, 4299547, 4913768, 6142210, 8599094, 12284420, 17198188, 21497735, 24568840, 34396376, 42995470, 85990940, 171981880]

約数ペア:

[(1, 171981880), (2, 85990940), (4, 42995470), (5, 34396376), (7, 24568840), (8, 21497735), (10, 17198188), (14, 12284420), (20, 8599094), (28, 6142210), (35, 4913768), (40, 4299547), (41, 4194680), (56, 3071105), (70, 2456884), (71, 2422280), (82, 2097340), (140, 1228442), (142, 1211140), (164, 1048670), (205, 838936), (211, 815080), (280, 614221), (284, 605570), (287, 599240), (328, 524335), (355, 484456), (410, 419468), (422, 407540), (497, 346040), (568, 302785), (574, 299620), (710, 242228), (820, 209734), (844, 203770), (994, 173020), (1055, 163016), (1148, 149810), (1420, 121114), (1435, 119848), (1477, 116440), (1640, 104867), (1688, 101885), (1988, 86510), (2110, 81508), (2296, 74905), (2485, 69208), (2840, 60557), (2870, 59924), (2911, 59080), (2954, 58220), (3976, 43255), (4220, 40754), (4970, 34604), (5740, 29962), (5822, 29540), (5908, 29110), (7385, 23288), (8440, 20377), (8651, 19880), (9940, 17302), (11480, 14981), (11644, 14770), (11816, 14555)]