890243036

素因数分解:

$2^2\times {\mathrm{331}}^1\times {\mathrm{509}}^1\times {\mathrm{1321}}^1$

素因数の和:2165

約数の個数: 24

約数和(自身を含む): 1566887280

約数和(自身を除く): 676644244

約数列:

[1, 2, 4, 331, 509, 662, 1018, 1321, 1324, 2036, 2642, 5284, 168479, 336958, 437251, 672389, 673916, 874502, 1344778, 1749004, 2689556, 222560759, 445121518, 890243036]

約数ペア:

[(1, 890243036), (2, 445121518), (4, 222560759), (331, 2689556), (509, 1749004), (662, 1344778), (1018, 874502), (1321, 673916), (1324, 672389), (2036, 437251), (2642, 336958), (5284, 168479)]