19911309

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{5639}}^1$

素因数の和:5760

約数の個数: 16

約数和(自身を含む): 29237760

約数和(自身を除く): 9326451

約数列:

[1, 3, 11, 33, 107, 321, 1177, 3531, 5639, 16917, 62029, 186087, 603373, 1810119, 6637103, 19911309]

約数ペア:

[(1, 19911309), (3, 6637103), (11, 1810119), (33, 603373), (107, 186087), (321, 62029), (1177, 16917), (3531, 5639)]