18557630720

素因数分解:

$2^8\times 5^1\times {\mathrm{2161}}^1\times {\mathrm{6709}}^1$

素因数の和:8891

約数の個数: 72

約数和(自身を含む): 44478523320

約数和(自身を除く): 25920892600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 2161, 4322, 6709, 8644, 10805, 13418, 17288, 21610, 26836, 33545, 34576, 43220, 53672, 67090, 69152, 86440, 107344, 134180, 138304, 172880, 214688, 268360, 276608, 345760, 429376, 536720, 553216, 691520, 858752, 1073440, 1383040, 1717504, 2146880, 2766080, 4293760, 8587520, 14498149, 28996298, 57992596, 72490745, 115985192, 144981490, 231970384, 289962980, 463940768, 579925960, 927881536, 1159851920, 1855763072, 2319703840, 3711526144, 4639407680, 9278815360, 18557630720]

約数ペア:

[(1, 18557630720), (2, 9278815360), (4, 4639407680), (5, 3711526144), (8, 2319703840), (10, 1855763072), (16, 1159851920), (20, 927881536), (32, 579925960), (40, 463940768), (64, 289962980), (80, 231970384), (128, 144981490), (160, 115985192), (256, 72490745), (320, 57992596), (640, 28996298), (1280, 14498149), (2161, 8587520), (4322, 4293760), (6709, 2766080), (8644, 2146880), (10805, 1717504), (13418, 1383040), (17288, 1073440), (21610, 858752), (26836, 691520), (33545, 553216), (34576, 536720), (43220, 429376), (53672, 345760), (67090, 276608), (69152, 268360), (86440, 214688), (107344, 172880), (134180, 138304)]