19999805

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{18433}}^1$

素因数の和:18476

約数の個数: 16

約数和(自身を含む): 28314624

約数和(自身を除く): 8314819

約数列:

[1, 5, 7, 31, 35, 155, 217, 1085, 18433, 92165, 129031, 571423, 645155, 2857115, 3999961, 19999805]

約数ペア:

[(1, 19999805), (5, 3999961), (7, 2857115), (31, 645155), (35, 571423), (155, 129031), (217, 92165), (1085, 18433)]