21116799

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{19391}}^1$

素因数の和:19419

約数の個数: 18

約数和(自身を含む): 33528768

約数和(自身を除く): 12411969

約数列:

[1, 3, 9, 11, 33, 99, 121, 363, 1089, 19391, 58173, 174519, 213301, 639903, 1919709, 2346311, 7038933, 21116799]

約数ペア:

[(1, 21116799), (3, 7038933), (9, 2346311), (11, 1919709), (33, 639903), (99, 213301), (121, 174519), (363, 58173), (1089, 19391)]