21135411

素因数分解:

$3^5\times {\mathrm{11}}^1\times {\mathrm{7907}}^1$

素因数の和:7933

約数の個数: 24

約数和(自身を含む): 34542144

約数和(自身を除く): 13406733

約数列:

[1, 3, 9, 11, 27, 33, 81, 99, 243, 297, 891, 2673, 7907, 23721, 71163, 86977, 213489, 260931, 640467, 782793, 1921401, 2348379, 7045137, 21135411]

約数ペア:

[(1, 21135411), (3, 7045137), (9, 2348379), (11, 1921401), (27, 782793), (33, 640467), (81, 260931), (99, 213489), (243, 86977), (297, 71163), (891, 23721), (2673, 7907)]