81249981

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{211}}^1\times {\mathrm{2731}}^1$

素因数の和:2992

約数の個数: 16

約数和(自身を含む): 111203328

約数和(自身を除く): 29953347

約数列:

[1, 3, 47, 141, 211, 633, 2731, 8193, 9917, 29751, 128357, 385071, 576241, 1728723, 27083327, 81249981]

約数ペア:

[(1, 81249981), (3, 27083327), (47, 1728723), (141, 576241), (211, 385071), (633, 128357), (2731, 29751), (8193, 9917)]