3988955

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{211}}^1$

素因数の和:434

約数の個数: 16

約数和(自身を含む): 5088000

約数和(自身を除く): 1099045

約数列:

[1, 5, 19, 95, 199, 211, 995, 1055, 3781, 4009, 18905, 20045, 41989, 209945, 797791, 3988955]

約数ペア:

[(1, 3988955), (5, 797791), (19, 209945), (95, 41989), (199, 20045), (211, 18905), (995, 4009), (1055, 3781)]