28181257

素因数分解:

${\mathrm{13}}^2\times {\mathrm{17}}^2\times {\mathrm{577}}^1$

素因数の和:637

約数の個数: 18

約数和(自身を含む): 32472618

約数和(自身を除く): 4291361

約数列:

[1, 13, 17, 169, 221, 289, 577, 2873, 3757, 7501, 9809, 48841, 97513, 127517, 166753, 1657721, 2167789, 28181257]

約数ペア:

[(1, 28181257), (13, 2167789), (17, 1657721), (169, 166753), (221, 127517), (289, 97513), (577, 48841), (2873, 9809), (3757, 7501)]