19980205

素因数分解:

$5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{10771}}^1$

素因数の和:10836

約数の個数: 16

約数和(自身を含む): 27921024

約数和(自身を除く): 7940819

約数列:

[1, 5, 7, 35, 53, 265, 371, 1855, 10771, 53855, 75397, 376985, 570863, 2854315, 3996041, 19980205]

約数ペア:

[(1, 19980205), (5, 3996041), (7, 2854315), (35, 570863), (53, 376985), (265, 75397), (371, 53855), (1855, 10771)]