21640437

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{26423}}^1$

素因数の和:26449

約数の個数: 24

約数和(自身を含む): 38473344

約数和(自身を除く): 16832907

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819, 26423, 79269, 184961, 237807, 343499, 554883, 1030497, 1664649, 2404493, 3091491, 7213479, 21640437]

約数ペア:

[(1, 21640437), (3, 7213479), (7, 3091491), (9, 2404493), (13, 1664649), (21, 1030497), (39, 554883), (63, 343499), (91, 237807), (117, 184961), (273, 79269), (819, 26423)]