25951480

素因数分解:

$2^3\times 5^1\times {\mathrm{643}}^1\times {\mathrm{1009}}^1$

素因数の和:1663

約数の個数: 32

約数和(自身を含む): 58539600

約数和(自身を除く): 32588120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 643, 1009, 1286, 2018, 2572, 3215, 4036, 5045, 5144, 6430, 8072, 10090, 12860, 20180, 25720, 40360, 648787, 1297574, 2595148, 3243935, 5190296, 6487870, 12975740, 25951480]

約数ペア:

[(1, 25951480), (2, 12975740), (4, 6487870), (5, 5190296), (8, 3243935), (10, 2595148), (20, 1297574), (40, 648787), (643, 40360), (1009, 25720), (1286, 20180), (2018, 12860), (2572, 10090), (3215, 8072), (4036, 6430), (5045, 5144)]