20695857

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^2$

素因数の和:150

約数の個数: 48

約数和(自身を含む): 35618688

約数和(自身を除く): 14922831

約数列:

[1, 3, 7, 13, 21, 39, 41, 43, 91, 123, 129, 273, 287, 301, 533, 559, 861, 903, 1599, 1677, 1763, 1849, 3731, 3913, 5289, 5547, 11193, 11739, 12341, 12943, 22919, 24037, 37023, 38829, 68757, 72111, 75809, 160433, 168259, 227427, 481299, 504777, 530663, 985517, 1591989, 2956551, 6898619, 20695857]

約数ペア:

[(1, 20695857), (3, 6898619), (7, 2956551), (13, 1591989), (21, 985517), (39, 530663), (41, 504777), (43, 481299), (91, 227427), (123, 168259), (129, 160433), (273, 75809), (287, 72111), (301, 68757), (533, 38829), (559, 37023), (861, 24037), (903, 22919), (1599, 12943), (1677, 12341), (1763, 11739), (1849, 11193), (3731, 5547), (3913, 5289)]