208586427

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{199}}^1$

素因数の和:336

約数の個数: 64

約数和(自身を含む): 350208000

約数和(自身を除く): 141621573

約数列:

[1, 3, 7, 19, 21, 37, 57, 71, 111, 133, 199, 213, 259, 399, 497, 597, 703, 777, 1349, 1393, 1491, 2109, 2627, 3781, 4047, 4179, 4921, 7363, 7881, 9443, 11343, 14129, 14763, 18389, 22089, 26467, 28329, 42387, 49913, 51541, 55167, 79401, 98903, 139897, 149739, 154623, 268451, 296709, 349391, 419691, 522773, 805353, 979279, 1048173, 1568319, 1879157, 2937837, 3659411, 5637471, 9932687, 10978233, 29798061, 69528809, 208586427]

約数ペア:

[(1, 208586427), (3, 69528809), (7, 29798061), (19, 10978233), (21, 9932687), (37, 5637471), (57, 3659411), (71, 2937837), (111, 1879157), (133, 1568319), (199, 1048173), (213, 979279), (259, 805353), (399, 522773), (497, 419691), (597, 349391), (703, 296709), (777, 268451), (1349, 154623), (1393, 149739), (1491, 139897), (2109, 98903), (2627, 79401), (3781, 55167), (4047, 51541), (4179, 49913), (4921, 42387), (7363, 28329), (7881, 26467), (9443, 22089), (11343, 18389), (14129, 14763)]