87490180

素因数分解:

$2^2\times 5^1\times {\mathrm{401}}^1\times {\mathrm{10909}}^1$

素因数の和:11319

約数の個数: 24

約数和(自身を含む): 184204440

約数和(自身を除く): 96714260

約数列:

[1, 2, 4, 5, 10, 20, 401, 802, 1604, 2005, 4010, 8020, 10909, 21818, 43636, 54545, 109090, 218180, 4374509, 8749018, 17498036, 21872545, 43745090, 87490180]

約数ペア:

[(1, 87490180), (2, 43745090), (4, 21872545), (5, 17498036), (10, 8749018), (20, 4374509), (401, 218180), (802, 109090), (1604, 54545), (2005, 43636), (4010, 21818), (8020, 10909)]