19938805

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{199}}^1\times {\mathrm{691}}^1$

素因数の和:924

約数の個数: 16

約数和(自身を含む): 24912000

約数和(自身を除く): 4973195

約数列:

[1, 5, 29, 145, 199, 691, 995, 3455, 5771, 20039, 28855, 100195, 137509, 687545, 3987761, 19938805]

約数ペア:

[(1, 19938805), (5, 3987761), (29, 687545), (145, 137509), (199, 100195), (691, 28855), (995, 20039), (3455, 5771)]