21230121

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{503}}^1\times {\mathrm{1279}}^1$

素因数の和:1796

約数の個数: 16

約数和(自身を含む): 30965760

約数和(自身を除く): 9735639

約数列:

[1, 3, 11, 33, 503, 1279, 1509, 3837, 5533, 14069, 16599, 42207, 643337, 1930011, 7076707, 21230121]

約数ペア:

[(1, 21230121), (3, 7076707), (11, 1930011), (33, 643337), (503, 42207), (1279, 16599), (1509, 14069), (3837, 5533)]