81782896

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{393187}}^1$

素因数の和:393208

約数の個数: 20

約数和(自身を含む): 170643592

約数和(自身を除く): 88860696

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 393187, 786374, 1572748, 3145496, 5111431, 6290992, 10222862, 20445724, 40891448, 81782896]

約数ペア:

[(1, 81782896), (2, 40891448), (4, 20445724), (8, 10222862), (13, 6290992), (16, 5111431), (26, 3145496), (52, 1572748), (104, 786374), (208, 393187)]