12381903

素因数分解:

$3^4\times {\mathrm{71}}^1\times {\mathrm{2153}}^1$

素因数の和:2236

約数の個数: 20

約数和(自身を含む): 18765648

約数和(自身を除く): 6383745

約数列:

[1, 3, 9, 27, 71, 81, 213, 639, 1917, 2153, 5751, 6459, 19377, 58131, 152863, 174393, 458589, 1375767, 4127301, 12381903]

約数ペア:

[(1, 12381903), (3, 4127301), (9, 1375767), (27, 458589), (71, 174393), (81, 152863), (213, 58131), (639, 19377), (1917, 6459), (2153, 5751)]