20747734

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{77999}}^1$

素因数の和:78027

約数の個数: 16

約数和(自身を含む): 37440000

約数和(自身を除く): 16692266

約数列:

[1, 2, 7, 14, 19, 38, 133, 266, 77999, 155998, 545993, 1091986, 1481981, 2963962, 10373867, 20747734]

約数ペア:

[(1, 20747734), (2, 10373867), (7, 2963962), (14, 1481981), (19, 1091986), (38, 545993), (133, 155998), (266, 77999)]