21000886220

素因数分解:

$2^2\times 5^1\times {\mathrm{1693}}^1\times {\mathrm{620227}}^1$

素因数の和:621929

約数の個数: 24

約数和(自身を含む): 44127981744

約数和(自身を除く): 23127095524

約数列:

[1, 2, 4, 5, 10, 20, 1693, 3386, 6772, 8465, 16930, 33860, 620227, 1240454, 2480908, 3101135, 6202270, 12404540, 1050044311, 2100088622, 4200177244, 5250221555, 10500443110, 21000886220]

約数ペア:

[(1, 21000886220), (2, 10500443110), (4, 5250221555), (5, 4200177244), (10, 2100088622), (20, 1050044311), (1693, 12404540), (3386, 6202270), (6772, 3101135), (8465, 2480908), (16930, 1240454), (33860, 620227)]