21209210

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{192811}}^1$

素因数の和:192829

約数の個数: 16

約数和(自身を含む): 41647392

約数和(自身を除く): 20438182

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 192811, 385622, 964055, 1928110, 2120921, 4241842, 10604605, 21209210]

約数ペア:

[(1, 21209210), (2, 10604605), (5, 4241842), (10, 2120921), (11, 1928110), (22, 964055), (55, 385622), (110, 192811)]