21491323209

素因数分解:

$3^2\times {\mathrm{18041}}^1\times {\mathrm{132361}}^1$

素因数の和:150408

約数の個数: 12

約数和(自身を含む): 31044977652

約数和(自身を除く): 9553654443

約数列:

[1, 3, 9, 18041, 54123, 132361, 162369, 397083, 1191249, 2387924801, 7163774403, 21491323209]

約数ペア:

[(1, 21491323209), (3, 7163774403), (9, 2387924801), (18041, 1191249), (54123, 397083), (132361, 162369)]