20173923

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{677}}^1$

素因数の和:744

約数の個数: 48

約数和(自身を含む): 37230336

約数和(自身を除く): 17056413

約数列:

[1, 3, 7, 9, 11, 21, 33, 43, 63, 77, 99, 129, 231, 301, 387, 473, 677, 693, 903, 1419, 2031, 2709, 3311, 4257, 4739, 6093, 7447, 9933, 14217, 22341, 29111, 29799, 42651, 52129, 67023, 87333, 156387, 203777, 261999, 320221, 469161, 611331, 960663, 1833993, 2241547, 2881989, 6724641, 20173923]

約数ペア:

[(1, 20173923), (3, 6724641), (7, 2881989), (9, 2241547), (11, 1833993), (21, 960663), (33, 611331), (43, 469161), (63, 320221), (77, 261999), (99, 203777), (129, 156387), (231, 87333), (301, 67023), (387, 52129), (473, 42651), (677, 29799), (693, 29111), (903, 22341), (1419, 14217), (2031, 9933), (2709, 7447), (3311, 6093), (4257, 4739)]