18903963

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{6827}}^1$

素因数の和:6914

約数の個数: 16

約数和(自身を含む): 27530496

約数和(自身を除く): 8626533

約数列:

[1, 3, 13, 39, 71, 213, 923, 2769, 6827, 20481, 88751, 266253, 484717, 1454151, 6301321, 18903963]

約数ペア:

[(1, 18903963), (3, 6301321), (13, 1454151), (39, 484717), (71, 266253), (213, 88751), (923, 20481), (2769, 6827)]