18420479

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{7717}}^1$

素因数の和:7766

約数の個数: 16

約数和(自身を含む): 23709696

約数和(自身を除く): 5289217

約数列:

[1, 7, 11, 31, 77, 217, 341, 2387, 7717, 54019, 84887, 239227, 594209, 1674589, 2631497, 18420479]

約数ペア:

[(1, 18420479), (7, 2631497), (11, 1674589), (31, 594209), (77, 239227), (217, 84887), (341, 54019), (2387, 7717)]