391302009

素因数分解:

$3^4\times 7^1\times {\mathrm{690127}}^1$

素因数の和:690146

約数の個数: 20

約数和(自身を含む): 668043904

約数和(自身を除く): 276741895

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 690127, 2070381, 4830889, 6211143, 14492667, 18633429, 43478001, 55900287, 130434003, 391302009]

約数ペア:

[(1, 391302009), (3, 130434003), (7, 55900287), (9, 43478001), (21, 18633429), (27, 14492667), (63, 6211143), (81, 4830889), (189, 2070381), (567, 690127)]