18508959

素因数分解:

$3^3\times 7^1\times {\mathrm{97931}}^1$

素因数の和:97947

約数の個数: 16

約数和(自身を含む): 31338240

約数和(自身を除く): 12829281

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 97931, 293793, 685517, 881379, 2056551, 2644137, 6169653, 18508959]

約数ペア:

[(1, 18508959), (3, 6169653), (7, 2644137), (9, 2056551), (21, 881379), (27, 685517), (63, 293793), (189, 97931)]