81142256

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{390107}}^1$

素因数の和:390128

約数の個数: 20

約数和(自身を含む): 169306872

約数和(自身を除く): 88164616

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 390107, 780214, 1560428, 3120856, 5071391, 6241712, 10142782, 20285564, 40571128, 81142256]

約数ペア:

[(1, 81142256), (2, 40571128), (4, 20285564), (8, 10142782), (13, 6241712), (16, 5071391), (26, 3120856), (52, 1560428), (104, 780214), (208, 390107)]