21713848

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{208787}}^1$

素因数の和:208806

約数の個数: 16

約数和(自身を含む): 43845480

約数和(自身を除く): 22131632

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 208787, 417574, 835148, 1670296, 2714231, 5428462, 10856924, 21713848]

約数ペア:

[(1, 21713848), (2, 10856924), (4, 5428462), (8, 2714231), (13, 1670296), (26, 835148), (52, 417574), (104, 208787)]