80280440

素因数分解:

$2^3\times 5^1\times {\mathrm{2007011}}^1$

素因数の和:2007022

約数の個数: 16

約数和(自身を含む): 180631080

約数和(自身を除く): 100350640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2007011, 4014022, 8028044, 10035055, 16056088, 20070110, 40140220, 80280440]

約数ペア:

[(1, 80280440), (2, 40140220), (4, 20070110), (5, 16056088), (8, 10035055), (10, 8028044), (20, 4014022), (40, 2007011)]