16986440

素因数分解:

$2^3\times 5^1\times {\mathrm{424661}}^1$

素因数の和:424672

約数の個数: 16

約数和(自身を含む): 38219580

約数和(自身を除く): 21233140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 424661, 849322, 1698644, 2123305, 3397288, 4246610, 8493220, 16986440]

約数ペア:

[(1, 16986440), (2, 8493220), (4, 4246610), (5, 3397288), (8, 2123305), (10, 1698644), (20, 849322), (40, 424661)]