81979227

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{107}}^1\times {\mathrm{109}}^1$

素因数の和:304

約数の個数: 48

約数和(自身を含む): 133436160

約数和(自身を除く): 51456933

約数列:

[1, 3, 9, 11, 33, 71, 99, 107, 109, 213, 321, 327, 639, 781, 963, 981, 1177, 1199, 2343, 3531, 3597, 7029, 7597, 7739, 10593, 10791, 11663, 22791, 23217, 34989, 68373, 69651, 83567, 85129, 104967, 128293, 250701, 255387, 384879, 752103, 766161, 828073, 1154637, 2484219, 7452657, 9108803, 27326409, 81979227]

約数ペア:

[(1, 81979227), (3, 27326409), (9, 9108803), (11, 7452657), (33, 2484219), (71, 1154637), (99, 828073), (107, 766161), (109, 752103), (213, 384879), (321, 255387), (327, 250701), (639, 128293), (781, 104967), (963, 85129), (981, 83567), (1177, 69651), (1199, 68373), (2343, 34989), (3531, 23217), (3597, 22791), (7029, 11663), (7597, 10791), (7739, 10593)]