19897900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{18089}}^1$

素因数の和:18114

約数の個数: 36

約数和(自身を含む): 47106360

約数和(自身を除く): 27208460

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 220, 275, 550, 1100, 18089, 36178, 72356, 90445, 180890, 198979, 361780, 397958, 452225, 795916, 904450, 994895, 1808900, 1989790, 3979580, 4974475, 9948950, 19897900]

約数ペア:

[(1, 19897900), (2, 9948950), (4, 4974475), (5, 3979580), (10, 1989790), (11, 1808900), (20, 994895), (22, 904450), (25, 795916), (44, 452225), (50, 397958), (55, 361780), (100, 198979), (110, 180890), (220, 90445), (275, 72356), (550, 36178), (1100, 18089)]