18564272

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{521}}^1$

素因数の和:677

約数の個数: 40

約数和(自身を含む): 38448432

約数和(自身を除く): 19884160

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 131, 136, 262, 272, 521, 524, 1042, 1048, 2084, 2096, 2227, 4168, 4454, 8336, 8857, 8908, 17714, 17816, 35428, 35632, 68251, 70856, 136502, 141712, 273004, 546008, 1092016, 1160267, 2320534, 4641068, 9282136, 18564272]

約数ペア:

[(1, 18564272), (2, 9282136), (4, 4641068), (8, 2320534), (16, 1160267), (17, 1092016), (34, 546008), (68, 273004), (131, 141712), (136, 136502), (262, 70856), (272, 68251), (521, 35632), (524, 35428), (1042, 17816), (1048, 17714), (2084, 8908), (2096, 8857), (2227, 8336), (4168, 4454)]