221497991

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{6271}}^1$

素因数の和:6327

約数の個数: 24

約数和(自身を含む): 275466240

約数和(自身を除く): 53968249

約数列:

[1, 11, 13, 19, 143, 169, 209, 247, 1859, 2717, 3211, 6271, 35321, 68981, 81523, 119149, 896753, 1059799, 1310639, 1548937, 11657789, 17038307, 20136181, 221497991]

約数ペア:

[(1, 221497991), (11, 20136181), (13, 17038307), (19, 11657789), (143, 1548937), (169, 1310639), (209, 1059799), (247, 896753), (1859, 119149), (2717, 81523), (3211, 68981), (6271, 35321)]