21903297

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{353}}^1$

素因数の和:449

約数の個数: 32

約数和(自身を含む): 33145728

約数和(自身を除く): 11242431

約数列:

[1, 3, 13, 37, 39, 43, 111, 129, 353, 481, 559, 1059, 1443, 1591, 1677, 4589, 4773, 13061, 13767, 15179, 20683, 39183, 45537, 62049, 169793, 197327, 509379, 561623, 591981, 1684869, 7301099, 21903297]

約数ペア:

[(1, 21903297), (3, 7301099), (13, 1684869), (37, 591981), (39, 561623), (43, 509379), (111, 197327), (129, 169793), (353, 62049), (481, 45537), (559, 39183), (1059, 20683), (1443, 15179), (1591, 13767), (1677, 13061), (4589, 4773)]