128209081

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{263}}^1\times {\mathrm{487}}^1$

素因数の和:781

約数の個数: 32

約数和(自身を含む): 173150208

約数和(自身を除く): 44941127

約数列:

[1, 7, 11, 13, 77, 91, 143, 263, 487, 1001, 1841, 2893, 3409, 3419, 5357, 6331, 20251, 23933, 37499, 37609, 44317, 69641, 128081, 263263, 487487, 896567, 1408891, 1665053, 9862237, 11655371, 18315583, 128209081]

約数ペア:

[(1, 128209081), (7, 18315583), (11, 11655371), (13, 9862237), (77, 1665053), (91, 1408891), (143, 896567), (263, 487487), (487, 263263), (1001, 128081), (1841, 69641), (2893, 44317), (3409, 37609), (3419, 37499), (5357, 23933), (6331, 20251)]