20356863

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{31}}^2\times {\mathrm{307}}^1$

素因数の和:395

約数の個数: 24

約数和(自身を含む): 29361024

約数和(自身を除く): 9004161

約数列:

[1, 3, 23, 31, 69, 93, 307, 713, 921, 961, 2139, 2883, 7061, 9517, 21183, 22103, 28551, 66309, 218891, 295027, 656673, 885081, 6785621, 20356863]

約数ペア:

[(1, 20356863), (3, 6785621), (23, 885081), (31, 656673), (69, 295027), (93, 218891), (307, 66309), (713, 28551), (921, 22103), (961, 21183), (2139, 9517), (2883, 7061)]