19800945

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23159}}^1$

素因数の和:23189

約数の個数: 24

約数和(自身を含む): 36129600

約数和(自身を除く): 16328655

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 171, 285, 855, 23159, 69477, 115795, 208431, 347385, 440021, 1042155, 1320063, 2200105, 3960189, 6600315, 19800945]

約数ペア:

[(1, 19800945), (3, 6600315), (5, 3960189), (9, 2200105), (15, 1320063), (19, 1042155), (45, 440021), (57, 347385), (95, 208431), (171, 115795), (285, 69477), (855, 23159)]