20551480

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{5087}}^1$

素因数の和:5199

約数の個数: 32

約数和(自身を含む): 46707840

約数和(自身を除く): 26156360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 5087, 10174, 20348, 25435, 40696, 50870, 101740, 203480, 513787, 1027574, 2055148, 2568935, 4110296, 5137870, 10275740, 20551480]

約数ペア:

[(1, 20551480), (2, 10275740), (4, 5137870), (5, 4110296), (8, 2568935), (10, 2055148), (20, 1027574), (40, 513787), (101, 203480), (202, 101740), (404, 50870), (505, 40696), (808, 25435), (1010, 20348), (2020, 10174), (4040, 5087)]