217420191

素因数分解:

$3^2\times {\mathrm{17}}^2\times {\mathrm{83591}}^1$

素因数の和:83631

約数の個数: 18

約数和(自身を含む): 333615672

約数和(自身を除く): 116195481

約数列:

[1, 3, 9, 17, 51, 153, 289, 867, 2601, 83591, 250773, 752319, 1421047, 4263141, 12789423, 24157799, 72473397, 217420191]

約数ペア:

[(1, 217420191), (3, 72473397), (9, 24157799), (17, 12789423), (51, 4263141), (153, 1421047), (289, 752319), (867, 250773), (2601, 83591)]