21815530

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{198323}}^1$

素因数の和:198341

約数の個数: 16

約数和(自身を含む): 42837984

約数和(自身を除く): 21022454

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 198323, 396646, 991615, 1983230, 2181553, 4363106, 10907765, 21815530]

約数ペア:

[(1, 21815530), (2, 10907765), (5, 4363106), (10, 2181553), (11, 1983230), (22, 991615), (55, 396646), (110, 198323)]