20481754

素因数分解:

$2^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1\times {\mathrm{1999}}^1$

素因数の和:2157

約数の個数: 16

約数和(自身を含む): 31680000

約数和(自身を除く): 11198246

約数列:

[1, 2, 47, 94, 109, 218, 1999, 3998, 5123, 10246, 93953, 187906, 217891, 435782, 10240877, 20481754]

約数ペア:

[(1, 20481754), (2, 10240877), (47, 435782), (94, 217891), (109, 187906), (218, 93953), (1999, 10246), (3998, 5123)]