99901090

素因数分解:

$2^1\times 5^1\times {\mathrm{1009}}^1\times {\mathrm{9901}}^1$

素因数の和:10917

約数の個数: 16

約数和(自身を含む): 180018360

約数和(自身を除く): 80117270

約数列:

[1, 2, 5, 10, 1009, 2018, 5045, 9901, 10090, 19802, 49505, 99010, 9990109, 19980218, 49950545, 99901090]

約数ペア:

[(1, 99901090), (2, 49950545), (5, 19980218), (10, 9990109), (1009, 99010), (2018, 49505), (5045, 19802), (9901, 10090)]