218680916

素因数分解:

$2^2\times {\mathrm{139}}^1\times {\mathrm{393311}}^1$

素因数の和:393454

約数の個数: 12

約数和(自身を含む): 385445760

約数和(自身を除く): 166764844

約数列:

[1, 2, 4, 139, 278, 556, 393311, 786622, 1573244, 54670229, 109340458, 218680916]

約数ペア:

[(1, 218680916), (2, 109340458), (4, 54670229), (139, 1573244), (278, 786622), (556, 393311)]