204680240

素因数分解:

$2^4\times 5^1\times {\mathrm{2558503}}^1$

素因数の和:2558516

約数の個数: 20

約数和(自身を含む): 475881744

約数和(自身を除く): 271201504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2558503, 5117006, 10234012, 12792515, 20468024, 25585030, 40936048, 51170060, 102340120, 204680240]

約数ペア:

[(1, 204680240), (2, 102340120), (4, 51170060), (5, 40936048), (8, 25585030), (10, 20468024), (16, 12792515), (20, 10234012), (40, 5117006), (80, 2558503)]