251990999

素因数分解:

${\mathrm{13}}^2\times {\mathrm{71}}^1\times {\mathrm{21001}}^1$

素因数の和:21098

約数の個数: 12

約数和(自身を含む): 276722352

約数和(自身を除く): 24731353

約数列:

[1, 13, 71, 169, 923, 11999, 21001, 273013, 1491071, 3549169, 19383923, 251990999]

約数ペア:

[(1, 251990999), (13, 19383923), (71, 3549169), (169, 1491071), (923, 273013), (11999, 21001)]