256545680

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{2081}}^1$

素因数の和:2184

約数の個数: 80

約数和(自身を含む): 631995264

約数和(自身を除く): 375449584

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 67, 80, 92, 115, 134, 184, 230, 268, 335, 368, 460, 536, 670, 920, 1072, 1340, 1541, 1840, 2081, 2680, 3082, 4162, 5360, 6164, 7705, 8324, 10405, 12328, 15410, 16648, 20810, 24656, 30820, 33296, 41620, 47863, 61640, 83240, 95726, 123280, 139427, 166480, 191452, 239315, 278854, 382904, 478630, 557708, 697135, 765808, 957260, 1115416, 1394270, 1914520, 2230832, 2788540, 3206821, 3829040, 5577080, 6413642, 11154160, 12827284, 16034105, 25654568, 32068210, 51309136, 64136420, 128272840, 256545680]

約数ペア:

[(1, 256545680), (2, 128272840), (4, 64136420), (5, 51309136), (8, 32068210), (10, 25654568), (16, 16034105), (20, 12827284), (23, 11154160), (40, 6413642), (46, 5577080), (67, 3829040), (80, 3206821), (92, 2788540), (115, 2230832), (134, 1914520), (184, 1394270), (230, 1115416), (268, 957260), (335, 765808), (368, 697135), (460, 557708), (536, 478630), (670, 382904), (920, 278854), (1072, 239315), (1340, 191452), (1541, 166480), (1840, 139427), (2081, 123280), (2680, 95726), (3082, 83240), (4162, 61640), (5360, 47863), (6164, 41620), (7705, 33296), (8324, 30820), (10405, 24656), (12328, 20810), (15410, 16648)]