81267819

素因数分解:

$3^1\times {\mathrm{197}}^1\times {\mathrm{199}}^1\times {\mathrm{691}}^1$

素因数の和:1090

約数の個数: 16

約数和(自身を含む): 109612800

約数和(自身を除く): 28344981

約数列:

[1, 3, 197, 199, 591, 597, 691, 2073, 39203, 117609, 136127, 137509, 408381, 412527, 27089273, 81267819]

約数ペア:

[(1, 81267819), (3, 27089273), (197, 412527), (199, 408381), (591, 137509), (597, 136127), (691, 117609), (2073, 39203)]