19909799

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{1597}}^1$

素因数の和:1754

約数の個数: 16

約数和(自身を含む): 24698688

約数和(自身を除く): 4788889

約数列:

[1, 7, 13, 91, 137, 959, 1597, 1781, 11179, 12467, 20761, 145327, 218789, 1531523, 2844257, 19909799]

約数ペア:

[(1, 19909799), (7, 2844257), (13, 1531523), (91, 218789), (137, 145327), (959, 20761), (1597, 12467), (1781, 11179)]