81311528

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{247901}}^1$

素因数の和:247948

約数の個数: 16

約数和(自身を含む): 156178260

約数和(自身を除く): 74866732

約数列:

[1, 2, 4, 8, 41, 82, 164, 328, 247901, 495802, 991604, 1983208, 10163941, 20327882, 40655764, 81311528]

約数ペア:

[(1, 81311528), (2, 40655764), (4, 20327882), (8, 10163941), (41, 1983208), (82, 991604), (164, 495802), (328, 247901)]