81042143

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1\times {\mathrm{149}}^1$

素因数の和:351

約数の個数: 32

約数和(自身を含む): 103488000

約数和(自身を除く): 22445857

約数列:

[1, 7, 13, 43, 91, 139, 149, 301, 559, 973, 1043, 1807, 1937, 3913, 5977, 6407, 12649, 13559, 20711, 41839, 44849, 77701, 83291, 144977, 269243, 543907, 583037, 890573, 1884701, 6234011, 11577449, 81042143]

約数ペア:

[(1, 81042143), (7, 11577449), (13, 6234011), (43, 1884701), (91, 890573), (139, 583037), (149, 543907), (301, 269243), (559, 144977), (973, 83291), (1043, 77701), (1807, 44849), (1937, 41839), (3913, 20711), (5977, 13559), (6407, 12649)]