201780209

素因数分解:

${\mathrm{19}}^1\times {\mathrm{31}}^2\times {\mathrm{43}}^1\times {\mathrm{257}}^1$

素因数の和:381

約数の個数: 24

約数和(自身を含む): 225450720

約数和(自身を除く): 23670511

約数列:

[1, 19, 31, 43, 257, 589, 817, 961, 1333, 4883, 7967, 11051, 18259, 25327, 41323, 151373, 209969, 246977, 342581, 785137, 4692563, 6509039, 10620011, 201780209]

約数ペア:

[(1, 201780209), (19, 10620011), (31, 6509039), (43, 4692563), (257, 785137), (589, 342581), (817, 246977), (961, 209969), (1333, 151373), (4883, 41323), (7967, 25327), (11051, 18259)]