19999155

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{1987}}^1$

素因数の和:2067

約数の個数: 32

約数和(自身を含む): 35497728

約数和(自身を除く): 15498573

約数列:

[1, 3, 5, 11, 15, 33, 55, 61, 165, 183, 305, 671, 915, 1987, 2013, 3355, 5961, 9935, 10065, 21857, 29805, 65571, 109285, 121207, 327855, 363621, 606035, 1333277, 1818105, 3999831, 6666385, 19999155]

約数ペア:

[(1, 19999155), (3, 6666385), (5, 3999831), (11, 1818105), (15, 1333277), (33, 606035), (55, 363621), (61, 327855), (165, 121207), (183, 109285), (305, 65571), (671, 29805), (915, 21857), (1987, 10065), (2013, 9935), (3355, 5961)]