21750807

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{42901}}^1$

素因数の和:42930

約数の個数: 12

約数和(自身を含む): 31404264

約数和(自身を除く): 9653457

約数列:

[1, 3, 13, 39, 169, 507, 42901, 128703, 557713, 1673139, 7250269, 21750807]

約数ペア:

[(1, 21750807), (3, 7250269), (13, 1673139), (39, 557713), (169, 128703), (507, 42901)]