320520057

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{619}}^1$

素因数の和:734

約数の個数: 64

約数和(自身を含む): 539965440

約数和(自身を除く): 219445383

約数列:

[1, 3, 11, 13, 17, 33, 39, 51, 71, 143, 187, 213, 221, 429, 561, 619, 663, 781, 923, 1207, 1857, 2343, 2431, 2769, 3621, 6809, 7293, 8047, 10153, 10523, 13277, 15691, 20427, 24141, 30459, 31569, 39831, 43949, 47073, 88517, 115753, 131847, 136799, 172601, 265551, 347259, 410397, 483439, 517803, 571337, 747133, 1450317, 1504789, 1714011, 2241399, 4514367, 6284707, 8218463, 9712729, 18854121, 24655389, 29138187, 106840019, 320520057]

約数ペア:

[(1, 320520057), (3, 106840019), (11, 29138187), (13, 24655389), (17, 18854121), (33, 9712729), (39, 8218463), (51, 6284707), (71, 4514367), (143, 2241399), (187, 1714011), (213, 1504789), (221, 1450317), (429, 747133), (561, 571337), (619, 517803), (663, 483439), (781, 410397), (923, 347259), (1207, 265551), (1857, 172601), (2343, 136799), (2431, 131847), (2769, 115753), (3621, 88517), (6809, 47073), (7293, 43949), (8047, 39831), (10153, 31569), (10523, 30459), (13277, 24141), (15691, 20427)]