21628418

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{67169}}^1$

素因数の和:67201

約数の個数: 16

約数和(自身を含む): 38689920

約数和(自身を除く): 17061502

約数列:

[1, 2, 7, 14, 23, 46, 161, 322, 67169, 134338, 470183, 940366, 1544887, 3089774, 10814209, 21628418]

約数ペア:

[(1, 21628418), (2, 10814209), (7, 3089774), (14, 1544887), (23, 940366), (46, 470183), (161, 134338), (322, 67169)]