2581205

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{661}}^1$

素因数の和:748

約数の個数: 16

約数和(自身を含む): 3431808

約数和(自身を除く): 850603

約数列:

[1, 5, 11, 55, 71, 355, 661, 781, 3305, 3905, 7271, 36355, 46931, 234655, 516241, 2581205]

約数ペア:

[(1, 2581205), (5, 516241), (11, 234655), (55, 46931), (71, 36355), (355, 7271), (661, 3905), (781, 3305)]