21804211

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{37}}^1\times {\mathrm{317}}^1$

素因数の和:391

約数の個数: 24

約数和(自身を含む): 26536464

約数和(自身を除く): 4732253

約数列:

[1, 11, 13, 37, 143, 169, 317, 407, 481, 1859, 3487, 4121, 5291, 6253, 11729, 45331, 53573, 68783, 129019, 152477, 589303, 1677247, 1982201, 21804211]

約数ペア:

[(1, 21804211), (11, 1982201), (13, 1677247), (37, 589303), (143, 152477), (169, 129019), (317, 68783), (407, 53573), (481, 45331), (1859, 11729), (3487, 6253), (4121, 5291)]