28123029

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{4001}}^1$

素因数の和:4089

約数の個数: 24

約数和(自身を含む): 44950464

約数和(自身を除く): 16827435

約数列:

[1, 3, 9, 11, 33, 71, 99, 213, 639, 781, 2343, 4001, 7029, 12003, 36009, 44011, 132033, 284071, 396099, 852213, 2556639, 3124781, 9374343, 28123029]

約数ペア:

[(1, 28123029), (3, 9374343), (9, 3124781), (11, 2556639), (33, 852213), (71, 396099), (99, 284071), (213, 132033), (639, 44011), (781, 36009), (2343, 12003), (4001, 7029)]