16680880

素因数分解:

$2^4\times 5^1\times {\mathrm{208511}}^1$

素因数の和:208524

約数の個数: 20

約数和(自身を含む): 38783232

約数和(自身を除く): 22102352

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 208511, 417022, 834044, 1042555, 1668088, 2085110, 3336176, 4170220, 8340440, 16680880]

約数ペア:

[(1, 16680880), (2, 8340440), (4, 4170220), (5, 3336176), (8, 2085110), (10, 1668088), (16, 1042555), (20, 834044), (40, 417022), (80, 208511)]