138427919

素因数分解:

$7^1\times {\mathrm{71}}^1\times {\mathrm{223}}^1\times {\mathrm{1249}}^1$

素因数の和:1550

約数の個数: 16

約数和(自身を含む): 161280000

約数和(自身を除く): 22852081

約数列:

[1, 7, 71, 223, 497, 1249, 1561, 8743, 15833, 88679, 110831, 278527, 620753, 1949689, 19775417, 138427919]

約数ペア:

[(1, 138427919), (7, 19775417), (71, 1949689), (223, 620753), (497, 278527), (1249, 110831), (1561, 88679), (8743, 15833)]