21513717

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{2417}}^1$

素因数の和:2489

約数の個数: 24

約数和(自身を含む): 33194304

約数和(自身を除く): 11680587

約数列:

[1, 3, 9, 23, 43, 69, 129, 207, 387, 989, 2417, 2967, 7251, 8901, 21753, 55591, 103931, 166773, 311793, 500319, 935379, 2390413, 7171239, 21513717]

約数ペア:

[(1, 21513717), (3, 7171239), (9, 2390413), (23, 935379), (43, 500319), (69, 311793), (129, 166773), (207, 103931), (387, 55591), (989, 21753), (2417, 8901), (2967, 7251)]