19999208

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{307}}^1\times {\mathrm{479}}^1$

素因数の和:809

約数の個数: 32

約数和(自身を含む): 39916800

約数和(自身を除く): 19917592

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 307, 479, 614, 958, 1228, 1916, 2456, 3832, 5219, 8143, 10438, 16286, 20876, 32572, 41752, 65144, 147053, 294106, 588212, 1176424, 2499901, 4999802, 9999604, 19999208]

約数ペア:

[(1, 19999208), (2, 9999604), (4, 4999802), (8, 2499901), (17, 1176424), (34, 588212), (68, 294106), (136, 147053), (307, 65144), (479, 41752), (614, 32572), (958, 20876), (1228, 16286), (1916, 10438), (2456, 8143), (3832, 5219)]