21654256

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{104107}}^1$

素因数の和:104128

約数の個数: 20

約数和(自身を含む): 45182872

約数和(自身を除く): 23528616

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 104107, 208214, 416428, 832856, 1353391, 1665712, 2706782, 5413564, 10827128, 21654256]

約数ペア:

[(1, 21654256), (2, 10827128), (4, 5413564), (8, 2706782), (13, 1665712), (16, 1353391), (26, 832856), (52, 416428), (104, 208214), (208, 104107)]