80721981

素因数分解:

$3^3\times {\mathrm{661}}^1\times {\mathrm{4523}}^1$

素因数の和:5193

約数の個数: 16

約数和(自身を含む): 119795520

約数和(自身を除く): 39073539

約数列:

[1, 3, 9, 27, 661, 1983, 4523, 5949, 13569, 17847, 40707, 122121, 2989703, 8969109, 26907327, 80721981]

約数ペア:

[(1, 80721981), (3, 26907327), (9, 8969109), (27, 2989703), (661, 122121), (1983, 40707), (4523, 17847), (5949, 13569)]