8991171

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{3319}}^1$

素因数の和:3375

約数の個数: 24

約数和(自身を含む): 15192320

約数和(自身を除く): 6201149

約数列:

[1, 3, 7, 9, 21, 43, 63, 129, 301, 387, 903, 2709, 3319, 9957, 23233, 29871, 69699, 142717, 209097, 428151, 999019, 1284453, 2997057, 8991171]

約数ペア:

[(1, 8991171), (3, 2997057), (7, 1284453), (9, 999019), (21, 428151), (43, 209097), (63, 142717), (129, 69699), (301, 29871), (387, 23233), (903, 9957), (2709, 3319)]