19487187

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{2003}}^1$

素因数の和:2079

約数の個数: 24

約数和(自身を含む): 30011904

約数和(自身を除く): 10524717

約数列:

[1, 3, 9, 23, 47, 69, 141, 207, 423, 1081, 2003, 3243, 6009, 9729, 18027, 46069, 94141, 138207, 282423, 414621, 847269, 2165243, 6495729, 19487187]

約数ペア:

[(1, 19487187), (3, 6495729), (9, 2165243), (23, 847269), (47, 414621), (69, 282423), (141, 138207), (207, 94141), (423, 46069), (1081, 18027), (2003, 9729), (3243, 6009)]