81244431

素因数分解:

$3^3\times {\mathrm{727}}^1\times {\mathrm{4139}}^1$

素因数の和:4875

約数の個数: 16

約数和(自身を含む): 120556800

約数和(自身を除く): 39312369

約数列:

[1, 3, 9, 27, 727, 2181, 4139, 6543, 12417, 19629, 37251, 111753, 3009053, 9027159, 27081477, 81244431]

約数ペア:

[(1, 81244431), (3, 27081477), (9, 9027159), (27, 3009053), (727, 111753), (2181, 37251), (4139, 19629), (6543, 12417)]