18928987

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{5717}}^1$

素因数の和:5778

約数の個数: 16

約数和(自身を含む): 24152832

約数和(自身を除く): 5223845

約数列:

[1, 7, 11, 43, 77, 301, 473, 3311, 5717, 40019, 62887, 245831, 440209, 1720817, 2704141, 18928987]

約数ペア:

[(1, 18928987), (7, 2704141), (11, 1720817), (43, 440209), (77, 245831), (301, 62887), (473, 40019), (3311, 5717)]