205404280

素因数分解:

$2^3\times 5^1\times {\mathrm{211}}^1\times {\mathrm{24337}}^1$

素因数の和:24559

約数の個数: 32

約数和(自身を含む): 464369040

約数和(自身を除く): 258964760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 211, 422, 844, 1055, 1688, 2110, 4220, 8440, 24337, 48674, 97348, 121685, 194696, 243370, 486740, 973480, 5135107, 10270214, 20540428, 25675535, 41080856, 51351070, 102702140, 205404280]

約数ペア:

[(1, 205404280), (2, 102702140), (4, 51351070), (5, 41080856), (8, 25675535), (10, 20540428), (20, 10270214), (40, 5135107), (211, 973480), (422, 486740), (844, 243370), (1055, 194696), (1688, 121685), (2110, 97348), (4220, 48674), (8440, 24337)]