1680452080

素因数分解:

$2^4\times 5^1\times {\mathrm{21005651}}^1$

素因数の和:21005664

約数の個数: 20

約数和(自身を含む): 3907051272

約数和(自身を除く): 2226599192

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 21005651, 42011302, 84022604, 105028255, 168045208, 210056510, 336090416, 420113020, 840226040, 1680452080]

約数ペア:

[(1, 1680452080), (2, 840226040), (4, 420113020), (5, 336090416), (8, 210056510), (10, 168045208), (16, 105028255), (20, 84022604), (40, 42011302), (80, 21005651)]