88891280

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^2\times {\mathrm{661}}^1$

素因数の和:756

約数の個数: 60

約数和(自身を含む): 212156436

約数和(自身を除く): 123265156

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 661, 820, 1322, 1640, 1681, 2644, 3280, 3305, 3362, 5288, 6610, 6724, 8405, 10576, 13220, 13448, 16810, 26440, 26896, 27101, 33620, 52880, 54202, 67240, 108404, 134480, 135505, 216808, 271010, 433616, 542020, 1084040, 1111141, 2168080, 2222282, 4444564, 5555705, 8889128, 11111410, 17778256, 22222820, 44445640, 88891280]

約数ペア:

[(1, 88891280), (2, 44445640), (4, 22222820), (5, 17778256), (8, 11111410), (10, 8889128), (16, 5555705), (20, 4444564), (40, 2222282), (41, 2168080), (80, 1111141), (82, 1084040), (164, 542020), (205, 433616), (328, 271010), (410, 216808), (656, 135505), (661, 134480), (820, 108404), (1322, 67240), (1640, 54202), (1681, 52880), (2644, 33620), (3280, 27101), (3305, 26896), (3362, 26440), (5288, 16810), (6610, 13448), (6724, 13220), (8405, 10576)]