15381009

素因数分解:

$3^4\times 7^1\times {\mathrm{27127}}^1$

素因数の和:27146

約数の個数: 20

約数和(自身を含む): 26259904

約数和(自身を除く): 10878895

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 27127, 81381, 189889, 244143, 569667, 732429, 1709001, 2197287, 5127003, 15381009]

約数ペア:

[(1, 15381009), (3, 5127003), (7, 2197287), (9, 1709001), (21, 732429), (27, 569667), (63, 244143), (81, 189889), (189, 81381), (567, 27127)]