205121910220

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{709}}^1\times {\mathrm{352819}}^1$

素因数の和:353578

約数の個数: 48

約数和(自身を含む): 441885880800

約数和(自身を除く): 236763970580

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 709, 820, 1418, 2836, 3545, 7090, 14180, 29069, 58138, 116276, 145345, 290690, 352819, 581380, 705638, 1411276, 1764095, 3528190, 7056380, 14465579, 28931158, 57862316, 72327895, 144655790, 250148671, 289311580, 500297342, 1000594684, 1250743355, 2501486710, 5002973420, 10256095511, 20512191022, 41024382044, 51280477555, 102560955110, 205121910220]

約数ペア:

[(1, 205121910220), (2, 102560955110), (4, 51280477555), (5, 41024382044), (10, 20512191022), (20, 10256095511), (41, 5002973420), (82, 2501486710), (164, 1250743355), (205, 1000594684), (410, 500297342), (709, 289311580), (820, 250148671), (1418, 144655790), (2836, 72327895), (3545, 57862316), (7090, 28931158), (14180, 14465579), (29069, 7056380), (58138, 3528190), (116276, 1764095), (145345, 1411276), (290690, 705638), (352819, 581380)]