20972907

素因数分解:

$3^2\times {\mathrm{59}}^1\times {\mathrm{127}}^1\times {\mathrm{311}}^1$

素因数の和:503

約数の個数: 24

約数和(自身を含む): 31150080

約数和(自身を除く): 10177173

約数列:

[1, 3, 9, 59, 127, 177, 311, 381, 531, 933, 1143, 2799, 7493, 18349, 22479, 39497, 55047, 67437, 118491, 165141, 355473, 2330323, 6990969, 20972907]

約数ペア:

[(1, 20972907), (3, 6990969), (9, 2330323), (59, 355473), (127, 165141), (177, 118491), (311, 67437), (381, 55047), (531, 39497), (933, 22479), (1143, 18349), (2799, 7493)]