21804310

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{198221}}^1$

素因数の和:198239

約数の個数: 16

約数和(自身を含む): 42815952

約数和(自身を除く): 21011642

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 198221, 396442, 991105, 1982210, 2180431, 4360862, 10902155, 21804310]

約数ペア:

[(1, 21804310), (2, 10902155), (5, 4360862), (10, 2180431), (11, 1982210), (22, 991105), (55, 396442), (110, 198221)]