669123

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1$

素因数の和:88

約数の個数: 48

約数和(自身を含む): 1281280

約数和(自身を除く): 612157

約数列:

[1, 3, 7, 9, 13, 19, 21, 39, 43, 57, 63, 91, 117, 129, 133, 171, 247, 273, 301, 387, 399, 559, 741, 817, 819, 903, 1197, 1677, 1729, 2223, 2451, 2709, 3913, 5031, 5187, 5719, 7353, 10621, 11739, 15561, 17157, 31863, 35217, 51471, 74347, 95589, 223041, 669123]

約数ペア:

[(1, 669123), (3, 223041), (7, 95589), (9, 74347), (13, 51471), (19, 35217), (21, 31863), (39, 17157), (43, 15561), (57, 11739), (63, 10621), (91, 7353), (117, 5719), (129, 5187), (133, 5031), (171, 3913), (247, 2709), (273, 2451), (301, 2223), (387, 1729), (399, 1677), (559, 1197), (741, 903), (817, 819)]