19902201

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{109}}^1\times {\mathrm{503}}^1$

素因数の和:637

約数の個数: 24

約数和(自身を含む): 29494080

約数和(自身を除く): 9591879

約数列:

[1, 3, 11, 33, 109, 121, 327, 363, 503, 1199, 1509, 3597, 5533, 13189, 16599, 39567, 54827, 60863, 164481, 182589, 603097, 1809291, 6634067, 19902201]

約数ペア:

[(1, 19902201), (3, 6634067), (11, 1809291), (33, 603097), (109, 182589), (121, 164481), (327, 60863), (363, 54827), (503, 39567), (1199, 16599), (1509, 13189), (3597, 5533)]