393991774

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{947}}^1\times {\mathrm{18911}}^1$

素因数の和:19871

約数の個数: 16

約数和(自身を含む): 645428736

約数和(自身を除く): 251436962

約数列:

[1, 2, 11, 22, 947, 1894, 10417, 18911, 20834, 37822, 208021, 416042, 17908717, 35817434, 196995887, 393991774]

約数ペア:

[(1, 393991774), (2, 196995887), (11, 35817434), (22, 17908717), (947, 416042), (1894, 208021), (10417, 37822), (18911, 20834)]