12987999

素因数分解:

$3^3\times {\mathrm{37}}^1\times {\mathrm{13001}}^1$

素因数の和:13047

約数の個数: 16

約数和(自身を含む): 19763040

約数和(自身を除く): 6775041

約数列:

[1, 3, 9, 27, 37, 111, 333, 999, 13001, 39003, 117009, 351027, 481037, 1443111, 4329333, 12987999]

約数ペア:

[(1, 12987999), (3, 4329333), (9, 1443111), (27, 481037), (37, 351027), (111, 117009), (333, 39003), (999, 13001)]