A two-component developer, comprising: a toner including a toner particle that includes a binder resin; and a magnetic carrier; wherein: the binder resin includes a polymer A having a first monomer unit derived from a first polymerizable monomer, and a second monomer unit derived from a second polymerizable monomer that is different from the first polymerizable monomer; the first polymerizable monomer is at least one selected from the group consisting of (meth)acrylic acid esters each having a C 18-36 alkyl group; a content of the first monomer unit in the polymer A is 5.0 mol% to 60.0 mol% based on the total number of moles of all the monomer units in the polymer A; a content of the second monomer unit in the polymer A is 20.0 mol% to 95.0 mol% based on the total number of moles of all the monomer units in the polymer A; assuming that an SP value of the first monomer unit calculated by the Fedors method as indicated in the description is taken as SP 11 (J/cm 3) 0.5 and an SP value of the second monomer unit calculated by the Fedors method as indicated in the description is taken as SP 21 (J/cm 3) 0.5, the following formulae and: 3.00 ≤ SP 21 − SP 11 ≤ 25.00 21.00 ≤ SP 21 are satisfied; the magnetic carrier has a magnetic core and a coating resin of the surface of the magnetic core, the coating resin includes a polymer B that includes a monomer unit (a) derived from a polymerizable monomer (a), and a monomer unit (b) derived from a polymerizable monomer (b) that is different from the polymerizable monomer (a); and assuming that an SP value of the monomer unit (a) calculated by the Fedors method as indicated in the description is taken as SP(a) (J/cm 3) 0.5, and an SP value of the monomer unit (b) calculated by the Fedors method as indicated in the description is taken as SP(b) (J/cm 3) 0.5, the following formulae and: 20.30 ≤ SP a ≤ 22.00 19.00 ≤ SP b ≤ 20.20 are satisfied. a toner including a toner particle that includes a binder resin; and a magnetic carrier; wherein: the binder resin includes a polymer A having a first monomer unit derived from a first polymerizable monomer, and a second monomer unit derived from a second polymerizable monomer that is different from the first polymerizable monomer; the first polymerizable monomer is at least one selected from the group consisting of (meth)acrylic acid esters each having a C 18-36 alkyl group; a content of the first monomer unit in the polymer A is 5.0 mol% to 60.0 mol% based on the total number of moles of all the monomer units in the polymer A; a content of the second monomer unit in the polymer A is 20.0 mol% to 95.0 mol% based on the total number of moles of all the monomer units in the polymer A; assuming that an SP value of the first monomer unit calculated by the Fedors method as indicated in the description is taken as SP 11 (J/cm 3) 0.5 and an SP value of the second monomer unit calculated by the Fedors method as indicated in the description is taken as SP 21 (J/cm 3) 0.5, the following formulae and: 3.00 ≤ SP 21 − SP 11 ≤ 25.00 21.00 ≤ SP 21 are satisfied; the magnetic carrier has a magnetic core and a coating resin of the surface of the magnetic core, the coating resin includes a polymer B that includes a monomer unit (a) derived from a polymerizable monomer (a), and a monomer unit (b) derived from a polymerizable monomer (b) that is different from the polymerizable monomer (a); and assuming that an SP value of the monomer unit (a) calculated by the Fedors method as indicated in the description is taken as SP(a) (J/cm 3) 0.5, and an SP value of the monomer unit (b) calculated by the Fedors method as indicated in the description is taken as SP(b) (J/cm 3) 0.5, the following formulae and: 20.30 ≤ SP a ≤ 22.00 19.00 ≤ SP b ≤ 20.20 are satisfied. the binder resin includes a polymer A having a first monomer unit derived from a first polymerizable monomer, and a second monomer unit derived from a second polymerizable monomer that is different from the first polymerizable monomer; the first polymerizable monomer is at least one selected from the group consisting of (meth)acrylic acid esters each having a C 18-36 alkyl group; a content of the first monomer unit in the polymer A is 5.0 mol% to 60.0 mol% based on the total number of moles of all the monomer units in the polymer A; a content of the second monomer unit in the polymer A is 20.0 mol% to 95.0 mol% based on the total number of moles of all the monomer units in the polymer A; assuming that an SP value of the first monomer unit calculated by the Fedors method as indicated in the description is taken as SP 11 (J/cm 3) 0.5 and an SP value of the second monomer unit calculated by the Fedors method as indicated in the description is taken as SP 21 (J/cm 3) 0.5, the following formulae and: 3.00 ≤ SP 21 − SP 11 ≤ 25.00 21.00 ≤ SP 21 are satisfied; the magnetic carrier has a magnetic core and a coating resin of the surface of the magnetic core, the coating resin includes a polymer B that includes a monomer unit (a) derived from a polymerizable monomer (a), and a monomer unit (b) derived from a polymerizable monomer (b) that is different from the polymerizable monomer (a); and assuming that an SP value of the monomer unit (a) calculated by the Fedors method as indicated in the description is taken as SP(a) (J/cm 3) 0.5, and an SP value of the monomer unit (b) calculated by the Fedors method as indicated in the description is taken as SP(b) (J/cm 3) 0.5, the following formulae and: 20.30 ≤ SP a ≤ 22.00 19.00 ≤ SP b ≤ 20.20 are satisfied.