399047375

素因数分解:

$5^3\times {\mathrm{17}}^1\times {\mathrm{187787}}^1$

素因数の和:187819

約数の個数: 16

約数和(自身を含む): 527308704

約数和(自身を除く): 128261329

約数列:

[1, 5, 17, 25, 85, 125, 425, 2125, 187787, 938935, 3192379, 4694675, 15961895, 23473375, 79809475, 399047375]

約数ペア:

[(1, 399047375), (5, 79809475), (17, 23473375), (25, 15961895), (85, 4694675), (125, 3192379), (425, 938935), (2125, 187787)]