20908899

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{1663}}^1$

素因数の和:1807

約数の個数: 24

約数和(自身を含む): 33226752

約数和(自身を除く): 12317853

約数列:

[1, 3, 9, 11, 33, 99, 127, 381, 1143, 1397, 1663, 4191, 4989, 12573, 14967, 18293, 54879, 164637, 211201, 633603, 1900809, 2323211, 6969633, 20908899]

約数ペア:

[(1, 20908899), (3, 6969633), (9, 2323211), (11, 1900809), (33, 633603), (99, 211201), (127, 164637), (381, 54879), (1143, 18293), (1397, 14967), (1663, 12573), (4191, 4989)]