8478565520

素因数分解:

$2^4\times 5^1\times {\mathrm{821}}^1\times {\mathrm{129089}}^1$

素因数の和:129923

約数の個数: 40

約数和(自身を含む): 19736828280

約数和(自身を除く): 11258262760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 821, 1642, 3284, 4105, 6568, 8210, 13136, 16420, 32840, 65680, 129089, 258178, 516356, 645445, 1032712, 1290890, 2065424, 2581780, 5163560, 10327120, 105982069, 211964138, 423928276, 529910345, 847856552, 1059820690, 1695713104, 2119641380, 4239282760, 8478565520]

約数ペア:

[(1, 8478565520), (2, 4239282760), (4, 2119641380), (5, 1695713104), (8, 1059820690), (10, 847856552), (16, 529910345), (20, 423928276), (40, 211964138), (80, 105982069), (821, 10327120), (1642, 5163560), (3284, 2581780), (4105, 2065424), (6568, 1290890), (8210, 1032712), (13136, 645445), (16420, 516356), (32840, 258178), (65680, 129089)]