1285187536

素因数分解:

$2^4\times {\mathrm{389}}^1\times {\mathrm{206489}}^1$

素因数の和:206886

約数の個数: 20

約数和(自身を含む): 2496464100

約数和(自身を除く): 1211276564

約数列:

[1, 2, 4, 8, 16, 389, 778, 1556, 3112, 6224, 206489, 412978, 825956, 1651912, 3303824, 80324221, 160648442, 321296884, 642593768, 1285187536]

約数ペア:

[(1, 1285187536), (2, 642593768), (4, 321296884), (8, 160648442), (16, 80324221), (389, 3303824), (778, 1651912), (1556, 825956), (3112, 412978), (6224, 206489)]