1997292020

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{916189}}^1$

素因数の和:916307

約数の個数: 24

約数和(自身を含む): 4232797800

約数和(自身を除く): 2235505780

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 916189, 1832378, 3664756, 4580945, 9161890, 18323780, 99864601, 199729202, 399458404, 499323005, 998646010, 1997292020]

約数ペア:

[(1, 1997292020), (2, 998646010), (4, 499323005), (5, 399458404), (10, 199729202), (20, 99864601), (109, 18323780), (218, 9161890), (436, 4580945), (545, 3664756), (1090, 1832378), (2180, 916189)]