21808911

素因数分解:

$3^1\times {\mathrm{103}}^1\times {\mathrm{163}}^1\times {\mathrm{433}}^1$

素因数の和:702

約数の個数: 16

約数和(自身を含む): 29609216

約数和(自身を除く): 7800305

約数列:

[1, 3, 103, 163, 309, 433, 489, 1299, 16789, 44599, 50367, 70579, 133797, 211737, 7269637, 21808911]

約数ペア:

[(1, 21808911), (3, 7269637), (103, 211737), (163, 133797), (309, 70579), (433, 50367), (489, 44599), (1299, 16789)]