25720851

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{337}}^1$

素因数の和:475

約数の個数: 32

約数和(自身を含む): 39370240

約数和(自身を除く): 13649389

約数列:

[1, 3, 13, 19, 39, 57, 103, 247, 309, 337, 741, 1011, 1339, 1957, 4017, 4381, 5871, 6403, 13143, 19209, 25441, 34711, 76323, 83239, 104133, 249717, 451243, 659509, 1353729, 1978527, 8573617, 25720851]

約数ペア:

[(1, 25720851), (3, 8573617), (13, 1978527), (19, 1353729), (39, 659509), (57, 451243), (103, 249717), (247, 104133), (309, 83239), (337, 76323), (741, 34711), (1011, 25441), (1339, 19209), (1957, 13143), (4017, 6403), (4381, 5871)]