39987999

素因数分解:

$3^4\times {\mathrm{103}}^1\times {\mathrm{4793}}^1$

素因数の和:4908

約数の個数: 20

約数和(自身を含む): 60327696

約数和(自身を除く): 20339697

約数列:

[1, 3, 9, 27, 81, 103, 309, 927, 2781, 4793, 8343, 14379, 43137, 129411, 388233, 493679, 1481037, 4443111, 13329333, 39987999]

約数ペア:

[(1, 39987999), (3, 13329333), (9, 4443111), (27, 1481037), (81, 493679), (103, 388233), (309, 129411), (927, 43137), (2781, 14379), (4793, 8343)]