212487895

素因数分解:

$5^1\times {\mathrm{131}}^1\times {\mathrm{401}}^1\times {\mathrm{809}}^1$

素因数の和:1346

約数の個数: 16

約数和(自身を含む): 257891040

約数和(自身を除く): 45403145

約数列:

[1, 5, 131, 401, 655, 809, 2005, 4045, 52531, 105979, 262655, 324409, 529895, 1622045, 42497579, 212487895]

約数ペア:

[(1, 212487895), (5, 42497579), (131, 1622045), (401, 529895), (655, 324409), (809, 262655), (2005, 105979), (4045, 52531)]