21453663

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{8443}}^1$

素因数の和:8475

約数の個数: 24

約数和(自身を含む): 35937664

約数和(自身を除く): 14484001

約数列:

[1, 3, 7, 11, 21, 33, 77, 121, 231, 363, 847, 2541, 8443, 25329, 59101, 92873, 177303, 278619, 650111, 1021603, 1950333, 3064809, 7151221, 21453663]

約数ペア:

[(1, 21453663), (3, 7151221), (7, 3064809), (11, 1950333), (21, 1021603), (33, 650111), (77, 278619), (121, 177303), (231, 92873), (363, 59101), (847, 25329), (2541, 8443)]