28807439

素因数分解:

${\mathrm{19}}^2\times {\mathrm{199}}^1\times {\mathrm{401}}^1$

素因数の和:638

約数の個数: 12

約数和(自身を含む): 30632400

約数和(自身を除く): 1824961

約数列:

[1, 19, 199, 361, 401, 3781, 7619, 71839, 79799, 144761, 1516181, 28807439]

約数ペア:

[(1, 28807439), (19, 1516181), (199, 144761), (361, 79799), (401, 71839), (3781, 7619)]