18906111

素因数分解:

$3^2\times 7^2\times {\mathrm{43}}^1\times {\mathrm{997}}^1$

素因数の和:1060

約数の個数: 36

約数和(自身を含む): 32538792

約数和(自身を除く): 13632681

約数列:

[1, 3, 7, 9, 21, 43, 49, 63, 129, 147, 301, 387, 441, 903, 997, 2107, 2709, 2991, 6321, 6979, 8973, 18963, 20937, 42871, 48853, 62811, 128613, 146559, 300097, 385839, 439677, 900291, 2100679, 2700873, 6302037, 18906111]

約数ペア:

[(1, 18906111), (3, 6302037), (7, 2700873), (9, 2100679), (21, 900291), (43, 439677), (49, 385839), (63, 300097), (129, 146559), (147, 128613), (301, 62811), (387, 48853), (441, 42871), (903, 20937), (997, 18963), (2107, 8973), (2709, 6979), (2991, 6321)]