1780309040

素因数分解:

$2^4\times 5^1\times {\mathrm{22253863}}^1$

素因数の和:22253876

約数の個数: 20

約数和(自身を含む): 4139218704

約数和(自身を除く): 2358909664

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 22253863, 44507726, 89015452, 111269315, 178030904, 222538630, 356061808, 445077260, 890154520, 1780309040]

約数ペア:

[(1, 1780309040), (2, 890154520), (4, 445077260), (5, 356061808), (8, 222538630), (10, 178030904), (16, 111269315), (20, 89015452), (40, 44507726), (80, 22253863)]