20713396

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{409}}^1\times {\mathrm{1151}}^1$

素因数の和:1575

約数の個数: 24

約数和(自身を含む): 39674880

約数和(自身を除く): 18961484

約数列:

[1, 2, 4, 11, 22, 44, 409, 818, 1151, 1636, 2302, 4499, 4604, 8998, 12661, 17996, 25322, 50644, 470759, 941518, 1883036, 5178349, 10356698, 20713396]

約数ペア:

[(1, 20713396), (2, 10356698), (4, 5178349), (11, 1883036), (22, 941518), (44, 470759), (409, 50644), (818, 25322), (1151, 17996), (1636, 12661), (2302, 8998), (4499, 4604)]