19949919

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{16339}}^1$

素因数の和:16390

約数の個数: 16

約数和(自身を含む): 29804160

約数和(自身を除く): 9854241

約数列:

[1, 3, 11, 33, 37, 111, 407, 1221, 16339, 49017, 179729, 539187, 604543, 1813629, 6649973, 19949919]

約数ペア:

[(1, 19949919), (3, 6649973), (11, 1813629), (33, 604543), (37, 539187), (111, 179729), (407, 49017), (1221, 16339)]