21311109

素因数分解:

$3^2\times {\mathrm{73}}^1\times {\mathrm{163}}^1\times {\mathrm{199}}^1$

素因数の和:441

約数の個数: 24

約数和(自身を含む): 31553600

約数和(自身を除く): 10242491

約数列:

[1, 3, 9, 73, 163, 199, 219, 489, 597, 657, 1467, 1791, 11899, 14527, 32437, 35697, 43581, 97311, 107091, 130743, 291933, 2367901, 7103703, 21311109]

約数ペア:

[(1, 21311109), (3, 7103703), (9, 2367901), (73, 291933), (163, 130743), (199, 107091), (219, 97311), (489, 43581), (597, 35697), (657, 32437), (1467, 14527), (1791, 11899)]