20409575

素因数分解:

$5^2\times {\mathrm{59}}^1\times {\mathrm{101}}^1\times {\mathrm{137}}^1$

素因数の和:307

約数の個数: 24

約数和(自身を含む): 26181360

約数和(自身を除く): 5771785

約数列:

[1, 5, 25, 59, 101, 137, 295, 505, 685, 1475, 2525, 3425, 5959, 8083, 13837, 29795, 40415, 69185, 148975, 202075, 345925, 816383, 4081915, 20409575]

約数ペア:

[(1, 20409575), (5, 4081915), (25, 816383), (59, 345925), (101, 202075), (137, 148975), (295, 69185), (505, 40415), (685, 29795), (1475, 13837), (2525, 8083), (3425, 5959)]