28447209

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{10501}}^1$

素因数の和:10557

約数の個数: 24

約数和(自身を含む): 48057152

約数和(自身を除く): 19609943

約数列:

[1, 3, 7, 9, 21, 43, 63, 129, 301, 387, 903, 2709, 10501, 31503, 73507, 94509, 220521, 451543, 661563, 1354629, 3160801, 4063887, 9482403, 28447209]

約数ペア:

[(1, 28447209), (3, 9482403), (7, 4063887), (9, 3160801), (21, 1354629), (43, 661563), (63, 451543), (129, 220521), (301, 94509), (387, 73507), (903, 31503), (2709, 10501)]