1990341

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1$

素因数の和:225

約数の個数: 24

約数和(自身を含む): 3043040

約数和(自身を除く): 1052699

約数列:

[1, 3, 9, 37, 43, 111, 129, 139, 333, 387, 417, 1251, 1591, 4773, 5143, 5977, 14319, 15429, 17931, 46287, 53793, 221149, 663447, 1990341]

約数ペア:

[(1, 1990341), (3, 663447), (9, 221149), (37, 53793), (43, 46287), (111, 17931), (129, 15429), (139, 14319), (333, 5977), (387, 5143), (417, 4773), (1251, 1591)]