81508765

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{2129}}^1$

素因数の和:2197

約数の個数: 32

約数和(自身を含む): 114508800

約数和(自身を除く): 33000035

約数列:

[1, 5, 13, 19, 31, 65, 95, 155, 247, 403, 589, 1235, 2015, 2129, 2945, 7657, 10645, 27677, 38285, 40451, 65999, 138385, 202255, 329995, 525863, 857987, 1253981, 2629315, 4289935, 6269905, 16301753, 81508765]

約数ペア:

[(1, 81508765), (5, 16301753), (13, 6269905), (19, 4289935), (31, 2629315), (65, 1253981), (95, 857987), (155, 525863), (247, 329995), (403, 202255), (589, 138385), (1235, 65999), (2015, 40451), (2129, 38285), (2945, 27677), (7657, 10645)]