19957886

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{137}}^1\times {\mathrm{431}}^1$

素因数の和:596

約数の個数: 24

約数和(自身を含む): 32729184

約数和(自身を除く): 12771298

約数列:

[1, 2, 13, 26, 137, 169, 274, 338, 431, 862, 1781, 3562, 5603, 11206, 23153, 46306, 59047, 72839, 118094, 145678, 767611, 1535222, 9978943, 19957886]

約数ペア:

[(1, 19957886), (2, 9978943), (13, 1535222), (26, 767611), (137, 145678), (169, 118094), (274, 72839), (338, 59047), (431, 46306), (862, 23153), (1781, 11206), (3562, 5603)]