19991567259

素因数分解:

$3^3\times {\mathrm{727}}^1\times {\mathrm{1018471}}^1$

素因数の和:1019207

約数の個数: 16

約数和(自身を含む): 29657904640

約数和(自身を除く): 9666337381

約数列:

[1, 3, 9, 27, 727, 2181, 6543, 19629, 1018471, 3055413, 9166239, 27498717, 740428417, 2221285251, 6663855753, 19991567259]

約数ペア:

[(1, 19991567259), (3, 6663855753), (9, 2221285251), (27, 740428417), (727, 27498717), (2181, 9166239), (6543, 3055413), (19629, 1018471)]