21328010

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{193891}}^1$

素因数の和:193909

約数の個数: 16

約数和(自身を含む): 41880672

約数和(自身を除く): 20552662

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 193891, 387782, 969455, 1938910, 2132801, 4265602, 10664005, 21328010]

約数ペア:

[(1, 21328010), (2, 10664005), (5, 4265602), (10, 2132801), (11, 1938910), (22, 969455), (55, 387782), (110, 193891)]