209989503

素因数分解:

$3^4\times {\mathrm{181}}^1\times {\mathrm{14323}}^1$

素因数の和:14516

約数の個数: 20

約数和(自身を含む): 315443128

約数和(自身を除く): 105453625

約数列:

[1, 3, 9, 27, 81, 181, 543, 1629, 4887, 14323, 14661, 42969, 128907, 386721, 1160163, 2592463, 7777389, 23332167, 69996501, 209989503]

約数ペア:

[(1, 209989503), (3, 69996501), (9, 23332167), (27, 7777389), (81, 2592463), (181, 1160163), (543, 386721), (1629, 128907), (4887, 42969), (14323, 14661)]