218619009

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{80701}}^1$

素因数の和:80757

約数の個数: 24

約数和(自身を含む): 369292352

約数和(自身を除く): 150673343

約数列:

[1, 3, 7, 9, 21, 43, 63, 129, 301, 387, 903, 2709, 80701, 242103, 564907, 726309, 1694721, 3470143, 5084163, 10410429, 24291001, 31231287, 72873003, 218619009]

約数ペア:

[(1, 218619009), (3, 72873003), (7, 31231287), (9, 24291001), (21, 10410429), (43, 5084163), (63, 3470143), (129, 1694721), (301, 726309), (387, 564907), (903, 242103), (2709, 80701)]