81895216

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{393727}}^1$

素因数の和:393748

約数の個数: 20

約数和(自身を含む): 170877952

約数和(自身を除く): 88982736

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 393727, 787454, 1574908, 3149816, 5118451, 6299632, 10236902, 20473804, 40947608, 81895216]

約数ペア:

[(1, 81895216), (2, 40947608), (4, 20473804), (8, 10236902), (13, 6299632), (16, 5118451), (26, 3149816), (52, 1574908), (104, 787454), (208, 393727)]