18720364

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{360007}}^1$

素因数の和:360024

約数の個数: 12

約数和(自身を含む): 35280784

約数和(自身を除く): 16560420

約数列:

[1, 2, 4, 13, 26, 52, 360007, 720014, 1440028, 4680091, 9360182, 18720364]

約数ペア:

[(1, 18720364), (2, 9360182), (4, 4680091), (13, 1440028), (26, 720014), (52, 360007)]