28505211

素因数分解:

$3^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{8431}}^1$

素因数の和:8471

約数の個数: 24

約数和(自身を含む): 46139904

約数和(自身を除く): 17634693

約数列:

[1, 3, 7, 21, 23, 49, 69, 147, 161, 483, 1127, 3381, 8431, 25293, 59017, 177051, 193913, 413119, 581739, 1239357, 1357391, 4072173, 9501737, 28505211]

約数ペア:

[(1, 28505211), (3, 9501737), (7, 4072173), (21, 1357391), (23, 1239357), (49, 581739), (69, 413119), (147, 193913), (161, 177051), (483, 59017), (1127, 25293), (3381, 8431)]