20109681

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{17321}}^1$

素因数の和:17373

約数の個数: 16

約数和(自身を含む): 30486720

約数和(自身を除く): 10377039

約数列:

[1, 3, 9, 27, 43, 129, 387, 1161, 17321, 51963, 155889, 467667, 744803, 2234409, 6703227, 20109681]

約数ペア:

[(1, 20109681), (3, 6703227), (9, 2234409), (27, 744803), (43, 467667), (129, 155889), (387, 51963), (1161, 17321)]