20499777

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{17657}}^1$

素因数の和:17709

約数の個数: 16

約数和(自身を含む): 31078080

約数和(自身を除く): 10578303

約数列:

[1, 3, 9, 27, 43, 129, 387, 1161, 17657, 52971, 158913, 476739, 759251, 2277753, 6833259, 20499777]

約数ペア:

[(1, 20499777), (3, 6833259), (9, 2277753), (27, 759251), (43, 476739), (129, 158913), (387, 52971), (1161, 17657)]