199920765

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{263}}^1\times {\mathrm{271}}^1$

素因数の和:570

約数の個数: 64

約数和(自身を含む): 372252672

約数和(自身を除く): 172331907

約数列:

[1, 3, 5, 11, 15, 17, 33, 51, 55, 85, 165, 187, 255, 263, 271, 561, 789, 813, 935, 1315, 1355, 2805, 2893, 2981, 3945, 4065, 4471, 4607, 8679, 8943, 13413, 13821, 14465, 14905, 22355, 23035, 43395, 44715, 49181, 50677, 67065, 69105, 71273, 147543, 152031, 213819, 245905, 253385, 356365, 737715, 760155, 784003, 1069095, 1211641, 2352009, 3634923, 3920015, 6058205, 11760045, 13328051, 18174615, 39984153, 66640255, 199920765]

約数ペア:

[(1, 199920765), (3, 66640255), (5, 39984153), (11, 18174615), (15, 13328051), (17, 11760045), (33, 6058205), (51, 3920015), (55, 3634923), (85, 2352009), (165, 1211641), (187, 1069095), (255, 784003), (263, 760155), (271, 737715), (561, 356365), (789, 253385), (813, 245905), (935, 213819), (1315, 152031), (1355, 147543), (2805, 71273), (2893, 69105), (2981, 67065), (3945, 50677), (4065, 49181), (4471, 44715), (4607, 43395), (8679, 23035), (8943, 22355), (13413, 14905), (13821, 14465)]