20758887

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{193}}^1$

素因数の和:272

約数の個数: 48

約数和(自身を含む): 34500960

約数和(自身を除く): 13742073

約数列:

[1, 3, 9, 17, 19, 37, 51, 57, 111, 153, 171, 193, 323, 333, 579, 629, 703, 969, 1737, 1887, 2109, 2907, 3281, 3667, 5661, 6327, 7141, 9843, 11001, 11951, 21423, 29529, 33003, 35853, 62339, 64269, 107559, 121397, 135679, 187017, 364191, 407037, 561051, 1092573, 1221111, 2306543, 6919629, 20758887]

約数ペア:

[(1, 20758887), (3, 6919629), (9, 2306543), (17, 1221111), (19, 1092573), (37, 561051), (51, 407037), (57, 364191), (111, 187017), (153, 135679), (171, 121397), (193, 107559), (323, 64269), (333, 62339), (579, 35853), (629, 33003), (703, 29529), (969, 21423), (1737, 11951), (1887, 11001), (2109, 9843), (2907, 7141), (3281, 6327), (3667, 5661)]