408185380

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{113}}^1\times {\mathrm{1657}}^1$

素因数の和:1888

約数の個数: 48

約数和(自身を含む): 873235440

約数和(自身を除く): 465050060

約数列:

[1, 2, 4, 5, 10, 20, 109, 113, 218, 226, 436, 452, 545, 565, 1090, 1130, 1657, 2180, 2260, 3314, 6628, 8285, 12317, 16570, 24634, 33140, 49268, 61585, 123170, 180613, 187241, 246340, 361226, 374482, 722452, 748964, 903065, 936205, 1806130, 1872410, 3612260, 3744820, 20409269, 40818538, 81637076, 102046345, 204092690, 408185380]

約数ペア:

[(1, 408185380), (2, 204092690), (4, 102046345), (5, 81637076), (10, 40818538), (20, 20409269), (109, 3744820), (113, 3612260), (218, 1872410), (226, 1806130), (436, 936205), (452, 903065), (545, 748964), (565, 722452), (1090, 374482), (1130, 361226), (1657, 246340), (2180, 187241), (2260, 180613), (3314, 123170), (6628, 61585), (8285, 49268), (12317, 33140), (16570, 24634)]