20399666

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{63353}}^1$

素因数の和:63385

約数の個数: 16

約数和(自身を含む): 36491904

約数和(自身を除く): 16092238

約数列:

[1, 2, 7, 14, 23, 46, 161, 322, 63353, 126706, 443471, 886942, 1457119, 2914238, 10199833, 20399666]

約数ペア:

[(1, 20399666), (2, 10199833), (7, 2914238), (14, 1457119), (23, 886942), (46, 443471), (161, 126706), (322, 63353)]