21517288

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{206897}}^1$

素因数の和:206916

約数の個数: 16

約数和(自身を含む): 43448580

約数和(自身を除く): 21931292

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 206897, 413794, 827588, 1655176, 2689661, 5379322, 10758644, 21517288]

約数ペア:

[(1, 21517288), (2, 10758644), (4, 5379322), (8, 2689661), (13, 1655176), (26, 827588), (52, 413794), (104, 206897)]