658727680

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1277}}^1$

素因数の和:1342

約数の個数: 144

約数和(自身を含む): 1755419904

約数和(自身を除く): 1096692224

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 64, 65, 80, 104, 124, 128, 130, 155, 160, 208, 248, 256, 260, 310, 320, 403, 416, 496, 520, 620, 640, 806, 832, 992, 1040, 1240, 1277, 1280, 1612, 1664, 1984, 2015, 2080, 2480, 2554, 3224, 3328, 3968, 4030, 4160, 4960, 5108, 6385, 6448, 7936, 8060, 8320, 9920, 10216, 12770, 12896, 16120, 16601, 16640, 19840, 20432, 25540, 25792, 32240, 33202, 39587, 39680, 40864, 51080, 51584, 64480, 66404, 79174, 81728, 83005, 102160, 103168, 128960, 132808, 158348, 163456, 166010, 197935, 204320, 257920, 265616, 316696, 326912, 332020, 395870, 408640, 514631, 515840, 531232, 633392, 664040, 791740, 817280, 1029262, 1062464, 1266784, 1328080, 1583480, 1634560, 2058524, 2124928, 2533568, 2573155, 2656160, 3166960, 4117048, 4249856, 5067136, 5146310, 5312320, 6333920, 8234096, 10134272, 10292620, 10624640, 12667840, 16468192, 20585240, 21249280, 25335680, 32936384, 41170480, 50671360, 65872768, 82340960, 131745536, 164681920, 329363840, 658727680]

約数ペア:

[(1, 658727680), (2, 329363840), (4, 164681920), (5, 131745536), (8, 82340960), (10, 65872768), (13, 50671360), (16, 41170480), (20, 32936384), (26, 25335680), (31, 21249280), (32, 20585240), (40, 16468192), (52, 12667840), (62, 10624640), (64, 10292620), (65, 10134272), (80, 8234096), (104, 6333920), (124, 5312320), (128, 5146310), (130, 5067136), (155, 4249856), (160, 4117048), (208, 3166960), (248, 2656160), (256, 2573155), (260, 2533568), (310, 2124928), (320, 2058524), (403, 1634560), (416, 1583480), (496, 1328080), (520, 1266784), (620, 1062464), (640, 1029262), (806, 817280), (832, 791740), (992, 664040), (1040, 633392), (1240, 531232), (1277, 515840), (1280, 514631), (1612, 408640), (1664, 395870), (1984, 332020), (2015, 326912), (2080, 316696), (2480, 265616), (2554, 257920), (3224, 204320), (3328, 197935), (3968, 166010), (4030, 163456), (4160, 158348), (4960, 132808), (5108, 128960), (6385, 103168), (6448, 102160), (7936, 83005), (8060, 81728), (8320, 79174), (9920, 66404), (10216, 64480), (12770, 51584), (12896, 51080), (16120, 40864), (16601, 39680), (16640, 39587), (19840, 33202), (20432, 32240), (25540, 25792)]