80281520

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{91229}}^1$

素因数の和:91253

約数の個数: 40

約数和(自身を含む): 203625360

約数和(自身を除く): 123343840

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 91229, 182458, 364916, 456145, 729832, 912290, 1003519, 1459664, 1824580, 2007038, 3649160, 4014076, 5017595, 7298320, 8028152, 10035190, 16056304, 20070380, 40140760, 80281520]

約数ペア:

[(1, 80281520), (2, 40140760), (4, 20070380), (5, 16056304), (8, 10035190), (10, 8028152), (11, 7298320), (16, 5017595), (20, 4014076), (22, 3649160), (40, 2007038), (44, 1824580), (55, 1459664), (80, 1003519), (88, 912290), (110, 729832), (176, 456145), (220, 364916), (440, 182458), (880, 91229)]