21154023

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{1361}}^1$

素因数の和:1535

約数の個数: 24

約数和(自身を含む): 33570576

約数和(自身を除く): 12416553

約数列:

[1, 3, 9, 11, 33, 99, 157, 471, 1361, 1413, 1727, 4083, 5181, 12249, 14971, 15543, 44913, 134739, 213677, 641031, 1923093, 2350447, 7051341, 21154023]

約数ペア:

[(1, 21154023), (3, 7051341), (9, 2350447), (11, 1923093), (33, 641031), (99, 213677), (157, 134739), (471, 44913), (1361, 15543), (1413, 14971), (1727, 12249), (4083, 5181)]