3997640

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{719}}^1$

素因数の和:869

約数の個数: 32

約数和(自身を含む): 9072000

約数和(自身を除く): 5074360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 719, 1112, 1390, 1438, 2780, 2876, 3595, 5560, 5752, 7190, 14380, 28760, 99941, 199882, 399764, 499705, 799528, 999410, 1998820, 3997640]

約数ペア:

[(1, 3997640), (2, 1998820), (4, 999410), (5, 799528), (8, 499705), (10, 399764), (20, 199882), (40, 99941), (139, 28760), (278, 14380), (556, 7190), (695, 5752), (719, 5560), (1112, 3595), (1390, 2876), (1438, 2780)]