20120221251

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{171967703}}^1$

素因数の和:171967722

約数の個数: 12

約数和(自身を含む): 31298122128

約数和(自身を除く): 11177900877

約数列:

[1, 3, 9, 13, 39, 117, 171967703, 515903109, 1547709327, 2235580139, 6706740417, 20120221251]

約数ペア:

[(1, 20120221251), (3, 6706740417), (9, 2235580139), (13, 1547709327), (39, 515903109), (117, 171967703)]