20091728

素因数分解:

$2^4\times {\mathrm{101}}^1\times {\mathrm{12433}}^1$

素因数の和:12542

約数の個数: 20

約数和(自身を含む): 39316308

約数和(自身を除く): 19224580

約数列:

[1, 2, 4, 8, 16, 101, 202, 404, 808, 1616, 12433, 24866, 49732, 99464, 198928, 1255733, 2511466, 5022932, 10045864, 20091728]

約数ペア:

[(1, 20091728), (2, 10045864), (4, 5022932), (8, 2511466), (16, 1255733), (101, 198928), (202, 99464), (404, 49732), (808, 24866), (1616, 12433)]