25187981

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1$

素因数の和:261

約数の個数: 32

約数和(自身を含む): 32702208

約数和(自身を除く): 7514227

約数列:

[1, 7, 13, 41, 43, 91, 157, 287, 301, 533, 559, 1099, 1763, 2041, 3731, 3913, 6437, 6751, 12341, 14287, 22919, 45059, 47257, 83681, 87763, 160433, 276791, 585767, 614341, 1937537, 3598283, 25187981]

約数ペア:

[(1, 25187981), (7, 3598283), (13, 1937537), (41, 614341), (43, 585767), (91, 276791), (157, 160433), (287, 87763), (301, 83681), (533, 47257), (559, 45059), (1099, 22919), (1763, 14287), (2041, 12341), (3731, 6751), (3913, 6437)]