81426305

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{643}}^1$

素因数の和:741

約数の個数: 32

約数和(自身を含む): 108810240

約数和(自身を除く): 27383935

約数列:

[1, 5, 19, 31, 43, 95, 155, 215, 589, 643, 817, 1333, 2945, 3215, 4085, 6665, 12217, 19933, 25327, 27649, 61085, 99665, 126635, 138245, 378727, 525331, 857119, 1893635, 2626655, 4285595, 16285261, 81426305]

約数ペア:

[(1, 81426305), (5, 16285261), (19, 4285595), (31, 2626655), (43, 1893635), (95, 857119), (155, 525331), (215, 378727), (589, 138245), (643, 126635), (817, 99665), (1333, 61085), (2945, 27649), (3215, 25327), (4085, 19933), (6665, 12217)]