21223521

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{19489}}^1$

素因数の和:19517

約数の個数: 18

約数和(自身を含む): 33698210

約数和(自身を除く): 12474689

約数列:

[1, 3, 9, 11, 33, 99, 121, 363, 1089, 19489, 58467, 175401, 214379, 643137, 1929411, 2358169, 7074507, 21223521]

約数ペア:

[(1, 21223521), (3, 7074507), (9, 2358169), (11, 1929411), (33, 643137), (99, 214379), (121, 175401), (363, 58467), (1089, 19489)]