19989310

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{181721}}^1$

素因数の和:181739

約数の個数: 16

約数和(自身を含む): 39251952

約数和(自身を除く): 19262642

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 181721, 363442, 908605, 1817210, 1998931, 3997862, 9994655, 19989310]

約数ペア:

[(1, 19989310), (2, 9994655), (5, 3997862), (10, 1998931), (11, 1817210), (22, 908605), (55, 363442), (110, 181721)]