20689845

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{3389}}^1$

素因数の和:3445

約数の個数: 32

約数和(自身を含む): 37100160

約数和(自身を除く): 16410315

約数列:

[1, 3, 5, 11, 15, 33, 37, 55, 111, 165, 185, 407, 555, 1221, 2035, 3389, 6105, 10167, 16945, 37279, 50835, 111837, 125393, 186395, 376179, 559185, 626965, 1379323, 1880895, 4137969, 6896615, 20689845]

約数ペア:

[(1, 20689845), (3, 6896615), (5, 4137969), (11, 1880895), (15, 1379323), (33, 626965), (37, 559185), (55, 376179), (111, 186395), (165, 125393), (185, 111837), (407, 50835), (555, 37279), (1221, 16945), (2035, 10167), (3389, 6105)]