16905520

素因数分解:

$2^4\times 5^1\times {\mathrm{211319}}^1$

素因数の和:211332

約数の個数: 20

約数和(自身を含む): 39305520

約数和(自身を除く): 22400000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 211319, 422638, 845276, 1056595, 1690552, 2113190, 3381104, 4226380, 8452760, 16905520]

約数ペア:

[(1, 16905520), (2, 8452760), (4, 4226380), (5, 3381104), (8, 2113190), (10, 1690552), (16, 1056595), (20, 845276), (40, 422638), (80, 211319)]