20489584

素因数分解:

$2^4\times {\mathrm{103}}^1\times {\mathrm{12433}}^1$

素因数の和:12544

約数の個数: 20

約数和(自身を含む): 40087216

約数和(自身を除く): 19597632

約数列:

[1, 2, 4, 8, 16, 103, 206, 412, 824, 1648, 12433, 24866, 49732, 99464, 198928, 1280599, 2561198, 5122396, 10244792, 20489584]

約数ペア:

[(1, 20489584), (2, 10244792), (4, 5122396), (8, 2561198), (16, 1280599), (103, 198928), (206, 99464), (412, 49732), (824, 24866), (1648, 12433)]