21499011

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{761}}^1$

素因数の和:883

約数の個数: 24

約数和(自身を含む): 32253936

約数和(自身を除く): 10754925

約数列:

[1, 3, 9, 43, 73, 129, 219, 387, 657, 761, 2283, 3139, 6849, 9417, 28251, 32723, 55553, 98169, 166659, 294507, 499977, 2388779, 7166337, 21499011]

約数ペア:

[(1, 21499011), (3, 7166337), (9, 2388779), (43, 499977), (73, 294507), (129, 166659), (219, 98169), (387, 55553), (657, 32723), (761, 28251), (2283, 9417), (3139, 6849)]