18778826

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{409}}^1\times {\mathrm{2087}}^1$

素因数の和:2509

約数の個数: 16

約数和(自身を含む): 30818880

約数和(自身を除く): 12040054

約数列:

[1, 2, 11, 22, 409, 818, 2087, 4174, 4499, 8998, 22957, 45914, 853583, 1707166, 9389413, 18778826]

約数ペア:

[(1, 18778826), (2, 9389413), (11, 1707166), (22, 853583), (409, 45914), (818, 22957), (2087, 8998), (4174, 4499)]