21238173

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{1663}}^1$

素因数の和:1726

約数の個数: 32

約数和(自身を含む): 35143680

約数和(自身を除く): 13905507

約数列:

[1, 3, 9, 11, 27, 33, 43, 99, 129, 297, 387, 473, 1161, 1419, 1663, 4257, 4989, 12771, 14967, 18293, 44901, 54879, 71509, 164637, 214527, 493911, 643581, 786599, 1930743, 2359797, 7079391, 21238173]

約数ペア:

[(1, 21238173), (3, 7079391), (9, 2359797), (11, 1930743), (27, 786599), (33, 643581), (43, 493911), (99, 214527), (129, 164637), (297, 71509), (387, 54879), (473, 44901), (1161, 18293), (1419, 14967), (1663, 12771), (4257, 4989)]