21241658

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{53}}^2\times {\mathrm{199}}^1$

素因数の和:326

約数の個数: 24

約数和(自身を含む): 34356000

約数和(自身を除く): 13114342

約数列:

[1, 2, 19, 38, 53, 106, 199, 398, 1007, 2014, 2809, 3781, 5618, 7562, 10547, 21094, 53371, 106742, 200393, 400786, 558991, 1117982, 10620829, 21241658]

約数ペア:

[(1, 21241658), (2, 10620829), (19, 1117982), (38, 558991), (53, 400786), (106, 200393), (199, 106742), (398, 53371), (1007, 21094), (2014, 10547), (2809, 7562), (3781, 5618)]