2105780

素因数分解:

$2^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{499}}^1$

素因数の和:719

約数の個数: 24

約数和(自身を含む): 4452000

約数和(自身を除く): 2346220

約数列:

[1, 2, 4, 5, 10, 20, 211, 422, 499, 844, 998, 1055, 1996, 2110, 2495, 4220, 4990, 9980, 105289, 210578, 421156, 526445, 1052890, 2105780]

約数ペア:

[(1, 2105780), (2, 1052890), (4, 526445), (5, 421156), (10, 210578), (20, 105289), (211, 9980), (422, 4990), (499, 4220), (844, 2495), (998, 2110), (1055, 1996)]