20572321

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^2$

素因数の和:213

約数の個数: 24

約数和(自身を含む): 26505792

約数和(自身を除く): 5933471

約数列:

[1, 7, 11, 53, 71, 77, 371, 497, 583, 781, 3763, 4081, 5041, 5467, 26341, 35287, 41393, 55451, 267173, 289751, 388157, 1870211, 2938903, 20572321]

約数ペア:

[(1, 20572321), (7, 2938903), (11, 1870211), (53, 388157), (71, 289751), (77, 267173), (371, 55451), (497, 41393), (583, 35287), (781, 26341), (3763, 5467), (4081, 5041)]