81586136

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{487}}^2$

素因数の和:1023

約数の個数: 24

約数和(自身を含む): 156853620

約数和(自身を除く): 75267484

約数列:

[1, 2, 4, 8, 43, 86, 172, 344, 487, 974, 1948, 3896, 20941, 41882, 83764, 167528, 237169, 474338, 948676, 1897352, 10198267, 20396534, 40793068, 81586136]

約数ペア:

[(1, 81586136), (2, 40793068), (4, 20396534), (8, 10198267), (43, 1897352), (86, 948676), (172, 474338), (344, 237169), (487, 167528), (974, 83764), (1948, 41882), (3896, 20941)]