18723952

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{90019}}^1$

素因数の和:90040

約数の個数: 20

約数和(自身を含む): 39068680

約数和(自身を除く): 20344728

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 90019, 180038, 360076, 720152, 1170247, 1440304, 2340494, 4680988, 9361976, 18723952]

約数ペア:

[(1, 18723952), (2, 9361976), (4, 4680988), (8, 2340494), (13, 1440304), (16, 1170247), (26, 720152), (52, 360076), (104, 180038), (208, 90019)]