21520658

素因数分解:

$2^1\times {\mathrm{127}}^1\times {\mathrm{193}}^1\times {\mathrm{439}}^1$

素因数の和:761

約数の個数: 16

約数和(自身を含む): 32778240

約数和(自身を除く): 11257582

約数列:

[1, 2, 127, 193, 254, 386, 439, 878, 24511, 49022, 55753, 84727, 111506, 169454, 10760329, 21520658]

約数ペア:

[(1, 21520658), (2, 10760329), (127, 169454), (193, 111506), (254, 84727), (386, 55753), (439, 49022), (878, 24511)]