39131991

素因数分解:

$3^7\times {\mathrm{29}}^1\times {\mathrm{617}}^1$

素因数の和:667

約数の個数: 32

約数和(自身を含む): 60811200

約数和(自身を除く): 21679209

約数列:

[1, 3, 9, 27, 29, 81, 87, 243, 261, 617, 729, 783, 1851, 2187, 2349, 5553, 7047, 16659, 17893, 21141, 49977, 53679, 63423, 149931, 161037, 449793, 483111, 1349379, 1449333, 4347999, 13043997, 39131991]

約数ペア:

[(1, 39131991), (3, 13043997), (9, 4347999), (27, 1449333), (29, 1349379), (81, 483111), (87, 449793), (243, 161037), (261, 149931), (617, 63423), (729, 53679), (783, 49977), (1851, 21141), (2187, 17893), (2349, 16659), (5553, 7047)]