28178270

素因数分解:

$2^1\times 5^1\times {\mathrm{401}}^1\times {\mathrm{7027}}^1$

素因数の和:7435

約数の個数: 16

約数和(自身を含む): 50854608

約数和(自身を除く): 22676338

約数列:

[1, 2, 5, 10, 401, 802, 2005, 4010, 7027, 14054, 35135, 70270, 2817827, 5635654, 14089135, 28178270]

約数ペア:

[(1, 28178270), (2, 14089135), (5, 5635654), (10, 2817827), (401, 70270), (802, 35135), (2005, 14054), (4010, 7027)]