21027878

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{317}}^1\times {\mathrm{1951}}^1$

素因数の和:2287

約数の個数: 16

約数和(自身を含む): 33519744

約数和(自身を除く): 12491866

約数列:

[1, 2, 17, 34, 317, 634, 1951, 3902, 5389, 10778, 33167, 66334, 618467, 1236934, 10513939, 21027878]

約数ペア:

[(1, 21027878), (2, 10513939), (17, 1236934), (34, 618467), (317, 66334), (634, 33167), (1951, 10778), (3902, 5389)]