20138379824

素因数分解:

$2^4\times {\mathrm{1259}}^1\times {\mathrm{999721}}^1$

素因数の和:1000988

約数の個数: 20

約数和(自身を含む): 39049141320

約数和(自身を除く): 18910761496

約数列:

[1, 2, 4, 8, 16, 1259, 2518, 5036, 10072, 20144, 999721, 1999442, 3998884, 7997768, 15995536, 1258648739, 2517297478, 5034594956, 10069189912, 20138379824]

約数ペア:

[(1, 20138379824), (2, 10069189912), (4, 5034594956), (8, 2517297478), (16, 1258648739), (1259, 15995536), (2518, 7997768), (5036, 3998884), (10072, 1999442), (20144, 999721)]