18393957

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{263}}^1\times {\mathrm{409}}^1$

素因数の和:697

約数の個数: 24

約数和(自身を含む): 28142400

約数和(自身を除く): 9748443

約数列:

[1, 3, 9, 19, 57, 171, 263, 409, 789, 1227, 2367, 3681, 4997, 7771, 14991, 23313, 44973, 69939, 107567, 322701, 968103, 2043773, 6131319, 18393957]

約数ペア:

[(1, 18393957), (3, 6131319), (9, 2043773), (19, 968103), (57, 322701), (171, 107567), (263, 69939), (409, 44973), (789, 23313), (1227, 14991), (2367, 7771), (3681, 4997)]