217088991

素因数分解:

$3^4\times 7^1\times {\mathrm{382873}}^1$

素因数の和:382892

約数の個数: 20

約数和(自身を含む): 370622032

約数和(自身を除く): 153533041

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 382873, 1148619, 2680111, 3445857, 8040333, 10337571, 24120999, 31012713, 72362997, 217088991]

約数ペア:

[(1, 217088991), (3, 72362997), (7, 31012713), (9, 24120999), (21, 10337571), (27, 8040333), (63, 3445857), (81, 2680111), (189, 1148619), (567, 382873)]