20690055

素因数分解:

$3^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{4297}}^1$

素因数の和:4415

約数の個数: 24

約数和(自身を含む): 36206352

約数和(自身を除く): 15516297

約数列:

[1, 3, 5, 9, 15, 45, 107, 321, 535, 963, 1605, 4297, 4815, 12891, 21485, 38673, 64455, 193365, 459779, 1379337, 2298895, 4138011, 6896685, 20690055]

約数ペア:

[(1, 20690055), (3, 6896685), (5, 4138011), (9, 2298895), (15, 1379337), (45, 459779), (107, 193365), (321, 64455), (535, 38673), (963, 21485), (1605, 12891), (4297, 4815)]