20899291293

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{163}}^1\times {\mathrm{491251}}^1$

素因数の和:491449

約数の個数: 24

約数和(自身を含む): 31420477920

約数和(自身を除く): 10521186627

約数列:

[1, 3, 9, 29, 87, 163, 261, 489, 1467, 4727, 14181, 42543, 491251, 1473753, 4421259, 14246279, 42738837, 80073913, 128216511, 240221739, 720665217, 2322143477, 6966430431, 20899291293]

約数ペア:

[(1, 20899291293), (3, 6966430431), (9, 2322143477), (29, 720665217), (87, 240221739), (163, 128216511), (261, 80073913), (489, 42738837), (1467, 14246279), (4727, 4421259), (14181, 1473753), (42543, 491251)]