22021520

素因数分解:

$2^4\times 5^1\times {\mathrm{275269}}^1$

素因数の和:275282

約数の個数: 20

約数和(自身を含む): 51200220

約数和(自身を除く): 29178700

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 275269, 550538, 1101076, 1376345, 2202152, 2752690, 4404304, 5505380, 11010760, 22021520]

約数ペア:

[(1, 22021520), (2, 11010760), (4, 5505380), (5, 4404304), (8, 2752690), (10, 2202152), (16, 1376345), (20, 1101076), (40, 550538), (80, 275269)]