19581987

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{239}}^1\times {\mathrm{881}}^1$

素因数の和:1154

約数の個数: 16

約数和(自身を含む): 27095040

約数和(自身を除く): 7513053

約数列:

[1, 3, 31, 93, 239, 717, 881, 2643, 7409, 22227, 27311, 81933, 210559, 631677, 6527329, 19581987]

約数ペア:

[(1, 19581987), (3, 6527329), (31, 631677), (93, 210559), (239, 81933), (717, 27311), (881, 22227), (2643, 7409)]