9920231997

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{163}}^1\times {\mathrm{21377}}^1$

素因数の和:21629

約数の個数: 32

約数和(自身を含む): 14528830848

約数和(自身を除く): 4608598851

約数列:

[1, 3, 13, 39, 73, 163, 219, 489, 949, 2119, 2847, 6357, 11899, 21377, 35697, 64131, 154687, 277901, 464061, 833703, 1560521, 3484451, 4681563, 10453353, 20286773, 45297863, 60860319, 135893589, 254364923, 763094769, 3306743999, 9920231997]

約数ペア:

[(1, 9920231997), (3, 3306743999), (13, 763094769), (39, 254364923), (73, 135893589), (163, 60860319), (219, 45297863), (489, 20286773), (949, 10453353), (2119, 4681563), (2847, 3484451), (6357, 1560521), (11899, 833703), (21377, 464061), (35697, 277901), (64131, 154687)]