20124559

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1$

素因数の和:239

約数の個数: 32

約数和(自身を含む): 26216960

約数和(自身を除く): 6092401

約数列:

[1, 7, 13, 37, 43, 91, 139, 259, 301, 481, 559, 973, 1591, 1807, 3367, 3913, 5143, 5977, 11137, 12649, 20683, 36001, 41839, 66859, 77701, 144781, 221149, 468013, 543907, 1548043, 2874937, 20124559]

約数ペア:

[(1, 20124559), (7, 2874937), (13, 1548043), (37, 543907), (43, 468013), (91, 221149), (139, 144781), (259, 77701), (301, 66859), (481, 41839), (559, 36001), (973, 20683), (1591, 12649), (1807, 11137), (3367, 5977), (3913, 5143)]