28640339

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{347}}^1\times {\mathrm{907}}^1$

素因数の和:1274

約数の個数: 16

約数和(自身を含む): 35390208

約数和(自身を除く): 6749869

約数列:

[1, 7, 13, 91, 347, 907, 2429, 4511, 6349, 11791, 31577, 82537, 314729, 2203103, 4091477, 28640339]

約数ペア:

[(1, 28640339), (7, 4091477), (13, 2203103), (91, 314729), (347, 82537), (907, 31577), (2429, 11791), (4511, 6349)]