1998820

素因数分解:

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

素因数の和:867

約数の個数: 24

約数和(自身を含む): 4233600

約数和(自身を除く): 2234780

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 719, 1390, 1438, 2780, 2876, 3595, 7190, 14380, 99941, 199882, 399764, 499705, 999410, 1998820]

約数ペア:

[(1, 1998820), (2, 999410), (4, 499705), (5, 399764), (10, 199882), (20, 99941), (139, 14380), (278, 7190), (556, 3595), (695, 2876), (719, 2780), (1390, 1438)]