19986081

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{521}}^1\times {\mathrm{673}}^1$

素因数の和:1216

約数の個数: 16

約数和(自身を含む): 28146240

約数和(自身を除く): 8160159

約数列:

[1, 3, 19, 57, 521, 673, 1563, 2019, 9899, 12787, 29697, 38361, 350633, 1051899, 6662027, 19986081]

約数ペア:

[(1, 19986081), (3, 6662027), (19, 1051899), (57, 350633), (521, 38361), (673, 29697), (1563, 12787), (2019, 9899)]