667340020

素因数分解:

$2^2\times 5^1\times {\mathrm{1489}}^1\times {\mathrm{22409}}^1$

素因数の和:23907

約数の個数: 24

約数和(自身を含む): 1402417800

約数和(自身を除く): 735077780

約数列:

[1, 2, 4, 5, 10, 20, 1489, 2978, 5956, 7445, 14890, 22409, 29780, 44818, 89636, 112045, 224090, 448180, 33367001, 66734002, 133468004, 166835005, 333670010, 667340020]

約数ペア:

[(1, 667340020), (2, 333670010), (4, 166835005), (5, 133468004), (10, 66734002), (20, 33367001), (1489, 448180), (2978, 224090), (5956, 112045), (7445, 89636), (14890, 44818), (22409, 29780)]