20943881

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{4093}}^1$

素因数の和:4160

約数の個数: 16

約数和(自身を含む): 25939584

約数和(自身を除く): 4995703

約数列:

[1, 7, 17, 43, 119, 301, 731, 4093, 5117, 28651, 69581, 175999, 487067, 1231993, 2991983, 20943881]

約数ペア:

[(1, 20943881), (7, 2991983), (17, 1231993), (43, 487067), (119, 175999), (301, 69581), (731, 28651), (4093, 5117)]