20278712

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{81769}}^1$

素因数の和:81806

約数の個数: 16

約数和(自身を含む): 39249600

約数和(自身を除く): 18970888

約数列:

[1, 2, 4, 8, 31, 62, 124, 248, 81769, 163538, 327076, 654152, 2534839, 5069678, 10139356, 20278712]

約数ペア:

[(1, 20278712), (2, 10139356), (4, 5069678), (8, 2534839), (31, 654152), (62, 327076), (124, 163538), (248, 81769)]