21280360

素因数分解:

$2^3\times 5^1\times {\mathrm{532009}}^1$

素因数の和:532020

約数の個数: 16

約数和(自身を含む): 47880900

約数和(自身を除く): 26600540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 532009, 1064018, 2128036, 2660045, 4256072, 5320090, 10640180, 21280360]

約数ペア:

[(1, 21280360), (2, 10640180), (4, 5320090), (5, 4256072), (8, 2660045), (10, 2128036), (20, 1064018), (40, 532009)]