20258781

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{2437}}^1$

素因数の和:2620

約数の個数: 16

約数和(自身を含む): 28787904

約数和(自身を除く): 8529123

約数列:

[1, 3, 17, 51, 163, 489, 2437, 2771, 7311, 8313, 41429, 124287, 397231, 1191693, 6752927, 20258781]

約数ペア:

[(1, 20258781), (3, 6752927), (17, 1191693), (51, 397231), (163, 124287), (489, 41429), (2437, 8313), (2771, 7311)]