209809960

素因数分解:

$2^3\times 5^1\times {\mathrm{211}}^1\times {\mathrm{24859}}^1$

素因数の和:25081

約数の個数: 32

約数和(自身を含む): 474328800

約数和(自身を除く): 264518840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 211, 422, 844, 1055, 1688, 2110, 4220, 8440, 24859, 49718, 99436, 124295, 198872, 248590, 497180, 994360, 5245249, 10490498, 20980996, 26226245, 41961992, 52452490, 104904980, 209809960]

約数ペア:

[(1, 209809960), (2, 104904980), (4, 52452490), (5, 41961992), (8, 26226245), (10, 20980996), (20, 10490498), (40, 5245249), (211, 994360), (422, 497180), (844, 248590), (1055, 198872), (1688, 124295), (2110, 99436), (4220, 49718), (8440, 24859)]