20810900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{18919}}^1$

素因数の和:18944

約数の個数: 36

約数和(自身を含む): 49267680

約数和(自身を除く): 28456780

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 220, 275, 550, 1100, 18919, 37838, 75676, 94595, 189190, 208109, 378380, 416218, 472975, 832436, 945950, 1040545, 1891900, 2081090, 4162180, 5202725, 10405450, 20810900]

約数ペア:

[(1, 20810900), (2, 10405450), (4, 5202725), (5, 4162180), (10, 2081090), (11, 1891900), (20, 1040545), (22, 945950), (25, 832436), (44, 472975), (50, 416218), (55, 378380), (100, 208109), (110, 189190), (220, 94595), (275, 75676), (550, 37838), (1100, 18919)]