18915831

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{1217}}^1$

素因数の和:1391

約数の個数: 24

約数和(自身を含む): 30021264

約数和(自身を除く): 11105433

約数列:

[1, 3, 9, 11, 33, 99, 157, 471, 1217, 1413, 1727, 3651, 5181, 10953, 13387, 15543, 40161, 120483, 191069, 573207, 1719621, 2101759, 6305277, 18915831]

約数ペア:

[(1, 18915831), (3, 6305277), (9, 2101759), (11, 1719621), (33, 573207), (99, 191069), (157, 120483), (471, 40161), (1217, 15543), (1413, 13387), (1727, 10953), (3651, 5181)]