19997894

素因数分解:

$2^1\times 7^1\times {\mathrm{661}}^1\times {\mathrm{2161}}^1$

素因数の和:2831

約数の個数: 16

約数和(自身を含む): 34349856

約数和(自身を除く): 14351962

約数列:

[1, 2, 7, 14, 661, 1322, 2161, 4322, 4627, 9254, 15127, 30254, 1428421, 2856842, 9998947, 19997894]

約数ペア:

[(1, 19997894), (2, 9998947), (7, 2856842), (14, 1428421), (661, 30254), (1322, 15127), (2161, 9254), (4322, 4627)]