71287411

素因数分解:

${\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{149}}^2$

素因数の和:343

約数の個数: 18

約数和(自身を含む): 81804660

約数和(自身を除く): 10517249

約数列:

[1, 13, 19, 149, 169, 247, 1937, 2831, 3211, 22201, 25181, 36803, 288613, 421819, 478439, 3751969, 5483647, 71287411]

約数ペア:

[(1, 71287411), (13, 5483647), (19, 3751969), (149, 478439), (169, 421819), (247, 288613), (1937, 36803), (2831, 25181), (3211, 22201)]