21038270

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{17387}}^1$

素因数の和:17416

約数の個数: 24

約数和(自身を含む): 41626872

約数和(自身を除く): 20588602

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 121, 242, 605, 1210, 17387, 34774, 86935, 173870, 191257, 382514, 956285, 1912570, 2103827, 4207654, 10519135, 21038270]

約数ペア:

[(1, 21038270), (2, 10519135), (5, 4207654), (10, 2103827), (11, 1912570), (22, 956285), (55, 382514), (110, 191257), (121, 173870), (242, 86935), (605, 34774), (1210, 17387)]