21582891

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{19819}}^1$

素因数の和:19847

約数の個数: 18

約数和(自身を含む): 34268780

約数和(自身を除く): 12685889

約数列:

[1, 3, 9, 11, 33, 99, 121, 363, 1089, 19819, 59457, 178371, 218009, 654027, 1962081, 2398099, 7194297, 21582891]

約数ペア:

[(1, 21582891), (3, 7194297), (9, 2398099), (11, 1962081), (33, 654027), (99, 218009), (121, 178371), (363, 59457), (1089, 19819)]