21230315

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{1123}}^1$

素因数の和:1346

約数の個数: 16

約数和(自身を含む): 26976000

約数和(自身を除く): 5745685

約数列:

[1, 5, 19, 95, 199, 995, 1123, 3781, 5615, 18905, 21337, 106685, 223477, 1117385, 4246063, 21230315]

約数ペア:

[(1, 21230315), (5, 4246063), (19, 1117385), (95, 223477), (199, 106685), (995, 21337), (1123, 18905), (3781, 5615)]