209137640

素因数分解:

$2^3\times 5^1\times {\mathrm{5228441}}^1$

素因数の和:5228452

約数の個数: 16

約数和(自身を含む): 470559780

約数和(自身を除く): 261422140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 5228441, 10456882, 20913764, 26142205, 41827528, 52284410, 104568820, 209137640]

約数ペア:

[(1, 209137640), (2, 104568820), (4, 52284410), (5, 41827528), (8, 26142205), (10, 20913764), (20, 10456882), (40, 5228441)]