20018206

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1\times {\mathrm{199}}^1$

素因数の和:340

約数の個数: 32

約数和(自身を含む): 33566400

約数和(自身を除く): 13548194

約数列:

[1, 2, 13, 26, 53, 73, 106, 146, 199, 398, 689, 949, 1378, 1898, 2587, 3869, 5174, 7738, 10547, 14527, 21094, 29054, 50297, 100594, 137111, 188851, 274222, 377702, 769931, 1539862, 10009103, 20018206]

約数ペア:

[(1, 20018206), (2, 10009103), (13, 1539862), (26, 769931), (53, 377702), (73, 274222), (106, 188851), (146, 137111), (199, 100594), (398, 50297), (689, 29054), (949, 21094), (1378, 14527), (1898, 10547), (2587, 7738), (3869, 5174)]