20890084

素因数分解:

$2^2\times {\mathrm{113}}^2\times {\mathrm{409}}^1$

素因数の和:639

約数の個数: 18

約数和(自身を含む): 36974210

約数和(自身を除く): 16084126

約数列:

[1, 2, 4, 113, 226, 409, 452, 818, 1636, 12769, 25538, 46217, 51076, 92434, 184868, 5222521, 10445042, 20890084]

約数ペア:

[(1, 20890084), (2, 10445042), (4, 5222521), (113, 184868), (226, 92434), (409, 51076), (452, 46217), (818, 25538), (1636, 12769)]