19510777

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{167}}^1$

素因数の和:253

約数の個数: 32

約数和(自身を含む): 24837120

約数和(自身を除く): 5326343

約数列:

[1, 11, 13, 19, 43, 143, 167, 209, 247, 473, 559, 817, 1837, 2171, 2717, 3173, 6149, 7181, 8987, 10621, 23881, 34903, 41249, 78991, 93353, 116831, 136439, 453739, 1026883, 1500829, 1773707, 19510777]

約数ペア:

[(1, 19510777), (11, 1773707), (13, 1500829), (19, 1026883), (43, 453739), (143, 136439), (167, 116831), (209, 93353), (247, 78991), (473, 41249), (559, 34903), (817, 23881), (1837, 10621), (2171, 8987), (2717, 7181), (3173, 6149)]