20289357

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{191}}^1$

素因数の和:274

約数の個数: 48

約数和(自身を含む): 34145280

約数和(自身を除く): 13855923

約数列:

[1, 3, 9, 11, 29, 33, 37, 87, 99, 111, 191, 261, 319, 333, 407, 573, 957, 1073, 1221, 1719, 2101, 2871, 3219, 3663, 5539, 6303, 7067, 9657, 11803, 16617, 18909, 21201, 35409, 49851, 60929, 63603, 77737, 106227, 182787, 204943, 233211, 548361, 614829, 699633, 1844487, 2254373, 6763119, 20289357]

約数ペア:

[(1, 20289357), (3, 6763119), (9, 2254373), (11, 1844487), (29, 699633), (33, 614829), (37, 548361), (87, 233211), (99, 204943), (111, 182787), (191, 106227), (261, 77737), (319, 63603), (333, 60929), (407, 49851), (573, 35409), (957, 21201), (1073, 18909), (1221, 16617), (1719, 11803), (2101, 9657), (2871, 7067), (3219, 6303), (3663, 5539)]