208451380

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{254209}}^1$

素因数の和:254259

約数の個数: 24

約数和(自身を含む): 448426440

約数和(自身を除く): 239975060

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 254209, 508418, 1016836, 1271045, 2542090, 5084180, 10422569, 20845138, 41690276, 52112845, 104225690, 208451380]

約数ペア:

[(1, 208451380), (2, 104225690), (4, 52112845), (5, 41690276), (10, 20845138), (20, 10422569), (41, 5084180), (82, 2542090), (164, 1271045), (205, 1016836), (410, 508418), (820, 254209)]