18979968

素因数分解:

$2^7\times 3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{307}}^1$

素因数の和:354

約数の個数: 128

約数和(自身を含む): 60318720

約数和(自身を除く): 41338752

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 23, 24, 28, 32, 42, 46, 48, 56, 64, 69, 84, 92, 96, 112, 128, 138, 161, 168, 184, 192, 224, 276, 307, 322, 336, 368, 384, 448, 483, 552, 614, 644, 672, 736, 896, 921, 966, 1104, 1228, 1288, 1344, 1472, 1842, 1932, 2149, 2208, 2456, 2576, 2688, 2944, 3684, 3864, 4298, 4416, 4912, 5152, 6447, 7061, 7368, 7728, 8596, 8832, 9824, 10304, 12894, 14122, 14736, 15456, 17192, 19648, 20608, 21183, 25788, 28244, 29472, 30912, 34384, 39296, 42366, 49427, 51576, 56488, 58944, 61824, 68768, 84732, 98854, 103152, 112976, 117888, 137536, 148281, 169464, 197708, 206304, 225952, 275072, 296562, 338928, 395416, 412608, 451904, 593124, 677856, 790832, 825216, 903808, 1186248, 1355712, 1581664, 2372496, 2711424, 3163328, 4744992, 6326656, 9489984, 18979968]

約数ペア:

[(1, 18979968), (2, 9489984), (3, 6326656), (4, 4744992), (6, 3163328), (7, 2711424), (8, 2372496), (12, 1581664), (14, 1355712), (16, 1186248), (21, 903808), (23, 825216), (24, 790832), (28, 677856), (32, 593124), (42, 451904), (46, 412608), (48, 395416), (56, 338928), (64, 296562), (69, 275072), (84, 225952), (92, 206304), (96, 197708), (112, 169464), (128, 148281), (138, 137536), (161, 117888), (168, 112976), (184, 103152), (192, 98854), (224, 84732), (276, 68768), (307, 61824), (322, 58944), (336, 56488), (368, 51576), (384, 49427), (448, 42366), (483, 39296), (552, 34384), (614, 30912), (644, 29472), (672, 28244), (736, 25788), (896, 21183), (921, 20608), (966, 19648), (1104, 17192), (1228, 15456), (1288, 14736), (1344, 14122), (1472, 12894), (1842, 10304), (1932, 9824), (2149, 8832), (2208, 8596), (2456, 7728), (2576, 7368), (2688, 7061), (2944, 6447), (3684, 5152), (3864, 4912), (4298, 4416)]