20993999

素因数分解:

${\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{233}}^1\times {\mathrm{239}}^1$

素因数の和:514

約数の個数: 16

約数和(自身を含む): 23587200

約数和(自身を除く): 2593201

約数列:

[1, 13, 29, 233, 239, 377, 3029, 3107, 6757, 6931, 55687, 87841, 90103, 723931, 1614923, 20993999]

約数ペア:

[(1, 20993999), (13, 1614923), (29, 723931), (233, 90103), (239, 87841), (377, 55687), (3029, 6931), (3107, 6757)]