821578239

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{47819}}^1$

素因数の和:47931

約数の個数: 24

約数和(自身を含む): 1253266560

約数和(自身を除く): 431688321

約数列:

[1, 3, 9, 23, 69, 83, 207, 249, 747, 1909, 5727, 17181, 47819, 143457, 430371, 1099837, 3299511, 3968977, 9898533, 11906931, 35720793, 91286471, 273859413, 821578239]

約数ペア:

[(1, 821578239), (3, 273859413), (9, 91286471), (23, 35720793), (69, 11906931), (83, 9898533), (207, 3968977), (249, 3299511), (747, 1099837), (1909, 430371), (5727, 143457), (17181, 47819)]