19090775

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{6311}}^1$

素因数の和:6343

約数の個数: 18

約数和(自身を含む): 26024376

約数和(自身を除く): 6933601

約数列:

[1, 5, 11, 25, 55, 121, 275, 605, 3025, 6311, 31555, 69421, 157775, 347105, 763631, 1735525, 3818155, 19090775]

約数ペア:

[(1, 19090775), (5, 3818155), (11, 1735525), (25, 763631), (55, 347105), (121, 157775), (275, 69421), (605, 31555), (3025, 6311)]