20405886

素因数分解:

$2^1\times 3^1\times {\mathrm{19}}^2\times {\mathrm{9421}}^1$

素因数の和:9464

約数の個数: 24

約数和(自身を含む): 43077384

約数和(自身を除く): 22671498

約数列:

[1, 2, 3, 6, 19, 38, 57, 114, 361, 722, 1083, 2166, 9421, 18842, 28263, 56526, 178999, 357998, 536997, 1073994, 3400981, 6801962, 10202943, 20405886]

約数ペア:

[(1, 20405886), (2, 10202943), (3, 6801962), (6, 3400981), (19, 1073994), (38, 536997), (57, 357998), (114, 178999), (361, 56526), (722, 28263), (1083, 18842), (2166, 9421)]