3882220

素因数分解:

$2^2\times 5^1\times {\mathrm{389}}^1\times {\mathrm{499}}^1$

素因数の和:897

約数の個数: 24

約数和(自身を含む): 8190000

約数和(自身を除く): 4307780

約数列:

[1, 2, 4, 5, 10, 20, 389, 499, 778, 998, 1556, 1945, 1996, 2495, 3890, 4990, 7780, 9980, 194111, 388222, 776444, 970555, 1941110, 3882220]

約数ペア:

[(1, 3882220), (2, 1941110), (4, 970555), (5, 776444), (10, 388222), (20, 194111), (389, 9980), (499, 7780), (778, 4990), (998, 3890), (1556, 2495), (1945, 1996)]