81520439

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{81439}}^1$

素因数の和:81470

約数の個数: 16

約数和(自身を含む): 109455360

約数和(自身を除く): 27934921

約数列:

[1, 7, 11, 13, 77, 91, 143, 1001, 81439, 570073, 895829, 1058707, 6270803, 7410949, 11645777, 81520439]

約数ペア:

[(1, 81520439), (7, 11645777), (11, 7410949), (13, 6270803), (77, 1058707), (91, 895829), (143, 570073), (1001, 81439)]