2156791

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{173}}^1$

素因数の和:330

約数の個数: 16

約数和(自身を含む): 2689344

約数和(自身を除く): 532553

約数列:

[1, 7, 13, 91, 137, 173, 959, 1211, 1781, 2249, 12467, 15743, 23701, 165907, 308113, 2156791]

約数ペア:

[(1, 2156791), (7, 308113), (13, 165907), (91, 23701), (137, 15743), (173, 12467), (959, 2249), (1211, 1781)]