21012318

素因数分解:

$2^1\times 3^3\times {\mathrm{389117}}^1$

素因数の和:389128

約数の個数: 16

約数和(自身を含む): 46694160

約数和(自身を除く): 25681842

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 389117, 778234, 1167351, 2334702, 3502053, 7004106, 10506159, 21012318]

約数ペア:

[(1, 21012318), (2, 10506159), (3, 7004106), (6, 3502053), (9, 2334702), (18, 1167351), (27, 778234), (54, 389117)]