20408144

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{29663}}^1$

素因数の和:29714

約数の個数: 20

約数和(自身を含む): 40461696

約数和(自身を除く): 20053552

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 29663, 59326, 118652, 237304, 474608, 1275509, 2551018, 5102036, 10204072, 20408144]

約数ペア:

[(1, 20408144), (2, 10204072), (4, 5102036), (8, 2551018), (16, 1275509), (43, 474608), (86, 237304), (172, 118652), (344, 59326), (688, 29663)]