28117989

素因数分解:

$3^3\times {\mathrm{163}}^1\times {\mathrm{6389}}^1$

素因数の和:6561

約数の個数: 16

約数和(自身を含む): 41918400

約数和(自身を除く): 13800411

約数列:

[1, 3, 9, 27, 163, 489, 1467, 4401, 6389, 19167, 57501, 172503, 1041407, 3124221, 9372663, 28117989]

約数ペア:

[(1, 28117989), (3, 9372663), (9, 3124221), (27, 1041407), (163, 172503), (489, 57501), (1467, 19167), (4401, 6389)]