256476129

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{409}}^1\times {\mathrm{2297}}^1$

素因数の和:2729

約数の個数: 32

約数和(自身を含む): 422096640

約数和(自身を除く): 165620511

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 409, 1227, 2297, 2863, 5317, 6891, 8589, 15951, 16079, 29861, 37219, 48237, 89583, 111657, 209027, 627081, 939473, 2818419, 6576311, 12213149, 19728933, 36639447, 85492043, 256476129]

約数ペア:

[(1, 256476129), (3, 85492043), (7, 36639447), (13, 19728933), (21, 12213149), (39, 6576311), (91, 2818419), (273, 939473), (409, 627081), (1227, 209027), (2297, 111657), (2863, 89583), (5317, 48237), (6891, 37219), (8589, 29861), (15951, 16079)]