18824787

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{211}}^1\times {\mathrm{431}}^1$

素因数の和:671

約数の個数: 24

約数和(自身を含む): 28574208

約数和(自身を除く): 9749421

約数列:

[1, 3, 9, 23, 69, 207, 211, 431, 633, 1293, 1899, 3879, 4853, 9913, 14559, 29739, 43677, 89217, 90941, 272823, 818469, 2091643, 6274929, 18824787]

約数ペア:

[(1, 18824787), (3, 6274929), (9, 2091643), (23, 818469), (69, 272823), (207, 90941), (211, 89217), (431, 43677), (633, 29739), (1293, 14559), (1899, 9913), (3879, 4853)]