209219983

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{643}}^1$

素因数の和:763

約数の個数: 32

約数和(自身を含む): 261144576

約数和(自身を除く): 51924593

約数列:

[1, 7, 23, 43, 47, 161, 301, 329, 643, 989, 1081, 2021, 4501, 6923, 7567, 14147, 14789, 27649, 30221, 46483, 103523, 193543, 211547, 325381, 635927, 695083, 1299503, 4451489, 4865581, 9096521, 29888569, 209219983]

約数ペア:

[(1, 209219983), (7, 29888569), (23, 9096521), (43, 4865581), (47, 4451489), (161, 1299503), (301, 695083), (329, 635927), (643, 325381), (989, 211547), (1081, 193543), (2021, 103523), (4501, 46483), (6923, 30221), (7567, 27649), (14147, 14789)]