19745127

素因数分解:

$3^4\times {\mathrm{43}}^1\times {\mathrm{5669}}^1$

素因数の和:5724

約数の個数: 20

約数和(自身を含む): 30187080

約数和(自身を除く): 10441953

約数列:

[1, 3, 9, 27, 43, 81, 129, 387, 1161, 3483, 5669, 17007, 51021, 153063, 243767, 459189, 731301, 2193903, 6581709, 19745127]

約数ペア:

[(1, 19745127), (3, 6581709), (9, 2193903), (27, 731301), (43, 459189), (81, 243767), (129, 153063), (387, 51021), (1161, 17007), (3483, 5669)]