18713181

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{311}}^1\times {\mathrm{647}}^1$

素因数の和:992

約数の個数: 16

約数和(自身を含む): 25878528

約数和(自身を除く): 7165347

約数列:

[1, 3, 31, 93, 311, 647, 933, 1941, 9641, 20057, 28923, 60171, 201217, 603651, 6237727, 18713181]

約数ペア:

[(1, 18713181), (3, 6237727), (31, 603651), (93, 201217), (311, 60171), (647, 28923), (933, 20057), (1941, 9641)]