28177209

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{4019}}^1$

素因数の和:4085

約数の個数: 24

約数和(自身を含む): 43898400

約数和(自身を除く): 15721191

約数列:

[1, 3, 9, 19, 41, 57, 123, 171, 369, 779, 2337, 4019, 7011, 12057, 36171, 76361, 164779, 229083, 494337, 687249, 1483011, 3130801, 9392403, 28177209]

約数ペア:

[(1, 28177209), (3, 9392403), (9, 3130801), (19, 1483011), (41, 687249), (57, 494337), (123, 229083), (171, 164779), (369, 76361), (779, 36171), (2337, 12057), (4019, 7011)]