199942561

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{1381}}^1$

素因数の和:1481

約数の個数: 32

約数和(自身を含む): 258798848

約数和(自身を除く): 58856287

約数列:

[1, 7, 13, 37, 43, 91, 259, 301, 481, 559, 1381, 1591, 3367, 3913, 9667, 11137, 17953, 20683, 51097, 59383, 125671, 144781, 357679, 415681, 664261, 771979, 2197171, 4649827, 5403853, 15380197, 28563223, 199942561]

約数ペア:

[(1, 199942561), (7, 28563223), (13, 15380197), (37, 5403853), (43, 4649827), (91, 2197171), (259, 771979), (301, 664261), (481, 415681), (559, 357679), (1381, 144781), (1591, 125671), (3367, 59383), (3913, 51097), (9667, 20683), (11137, 17953)]