19905275

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{839}}^1$

素因数の和:935

約数の個数: 24

約数和(自身を含む): 26977440

約数和(自身を除く): 7072165

約数列:

[1, 5, 13, 25, 65, 73, 325, 365, 839, 949, 1825, 4195, 4745, 10907, 20975, 23725, 54535, 61247, 272675, 306235, 796211, 1531175, 3981055, 19905275]

約数ペア:

[(1, 19905275), (5, 3981055), (13, 1531175), (25, 796211), (65, 306235), (73, 272675), (325, 61247), (365, 54535), (839, 23725), (949, 20975), (1825, 10907), (4195, 4745)]