19985900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{18169}}^1$

素因数の和:18194

約数の個数: 36

約数和(自身を含む): 47314680

約数和(自身を除く): 27328780

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 220, 275, 550, 1100, 18169, 36338, 72676, 90845, 181690, 199859, 363380, 399718, 454225, 799436, 908450, 999295, 1816900, 1998590, 3997180, 4996475, 9992950, 19985900]

約数ペア:

[(1, 19985900), (2, 9992950), (4, 4996475), (5, 3997180), (10, 1998590), (11, 1816900), (20, 999295), (22, 908450), (25, 799436), (44, 454225), (50, 399718), (55, 363380), (100, 199859), (110, 181690), (220, 90845), (275, 72676), (550, 36338), (1100, 18169)]