20178824

素因数分解:

$2^3\times {\mathrm{223}}^1\times {\mathrm{11311}}^1$

素因数の和:11540

約数の個数: 16

約数和(自身を含む): 38008320

約数和(自身を除く): 17829496

約数列:

[1, 2, 4, 8, 223, 446, 892, 1784, 11311, 22622, 45244, 90488, 2522353, 5044706, 10089412, 20178824]

約数ペア:

[(1, 20178824), (2, 10089412), (4, 5044706), (8, 2522353), (223, 90488), (446, 45244), (892, 22622), (1784, 11311)]