20987457022

素因数分解:

$2^1\times 7^1\times {\mathrm{1999}}^1\times {\mathrm{749927}}^1$

素因数の和:751935

約数の個数: 16

約数和(自身を含む): 35996544000

約数和(自身を除く): 15009086978

約数列:

[1, 2, 7, 14, 1999, 3998, 13993, 27986, 749927, 1499854, 5249489, 10498978, 1499104073, 2998208146, 10493728511, 20987457022]

約数ペア:

[(1, 20987457022), (2, 10493728511), (7, 2998208146), (14, 1499104073), (1999, 10498978), (3998, 5249489), (13993, 1499854), (27986, 749927)]