639521519

素因数分解:

$7^1\times {\mathrm{13}}^2\times {\mathrm{193}}^1\times {\mathrm{2801}}^1$

素因数の和:3027

約数の個数: 24

約数和(自身を含む): 795812832

約数和(自身を除く): 156291313

約数列:

[1, 7, 13, 91, 169, 193, 1183, 1351, 2509, 2801, 17563, 19607, 32617, 36413, 228319, 254891, 473369, 540593, 3313583, 3784151, 7027709, 49193963, 91360217, 639521519]

約数ペア:

[(1, 639521519), (7, 91360217), (13, 49193963), (91, 7027709), (169, 3784151), (193, 3313583), (1183, 540593), (1351, 473369), (2509, 254891), (2801, 228319), (17563, 36413), (19607, 32617)]