19808503

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{1951}}^1$

素因数の和:2046

約数の個数: 16

約数和(自身を含む): 23611392

約数和(自身を除く): 3802889

約数列:

[1, 11, 13, 71, 143, 781, 923, 1951, 10153, 21461, 25363, 138521, 278993, 1523731, 1800773, 19808503]

約数ペア:

[(1, 19808503), (11, 1800773), (13, 1523731), (71, 278993), (143, 138521), (781, 25363), (923, 21461), (1951, 10153)]