21620727

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{2143}}^1$

素因数の和:2227

約数の個数: 24

約数和(自身を含む): 33446400

約数和(自身を除く): 11825673

約数列:

[1, 3, 9, 19, 57, 59, 171, 177, 531, 1121, 2143, 3363, 6429, 10089, 19287, 40717, 122151, 126437, 366453, 379311, 1137933, 2402303, 7206909, 21620727]

約数ペア:

[(1, 21620727), (3, 7206909), (9, 2402303), (19, 1137933), (57, 379311), (59, 366453), (171, 126437), (177, 122151), (531, 40717), (1121, 19287), (2143, 10089), (3363, 6429)]