19805121

素因数分解:

$3^3\times 7^1\times {\mathrm{104789}}^1$

素因数の和:104805

約数の個数: 16

約数和(自身を含む): 33532800

約数和(自身を除く): 13727679

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 104789, 314367, 733523, 943101, 2200569, 2829303, 6601707, 19805121]

約数ペア:

[(1, 19805121), (3, 6601707), (7, 2829303), (9, 2200569), (21, 943101), (27, 733523), (63, 314367), (189, 104789)]