19818243

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{43177}}^1$

素因数の和:43203

約数の個数: 16

約数和(自身を含む): 31088160

約数和(自身を除く): 11269917

約数列:

[1, 3, 9, 17, 27, 51, 153, 459, 43177, 129531, 388593, 734009, 1165779, 2202027, 6606081, 19818243]

約数ペア:

[(1, 19818243), (3, 6606081), (9, 2202027), (17, 1165779), (27, 734009), (51, 388593), (153, 129531), (459, 43177)]