19747557

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{14341}}^1$

素因数の和:14370

約数の個数: 20

約数和(自身を含む): 31236876

約数和(自身を除く): 11489319

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 14341, 43023, 129069, 243797, 387207, 731391, 1161621, 2194173, 6582519, 19747557]

約数ペア:

[(1, 19747557), (3, 6582519), (9, 2194173), (17, 1161621), (27, 731391), (51, 387207), (81, 243797), (153, 129069), (459, 43023), (1377, 14341)]