19864624

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{2221}}^1$

素因数の和:2285

約数の個数: 40

約数和(自身を含む): 42431312

約数和(自身を除く): 22566688

約数列:

[1, 2, 4, 8, 13, 16, 26, 43, 52, 86, 104, 172, 208, 344, 559, 688, 1118, 2221, 2236, 4442, 4472, 8884, 8944, 17768, 28873, 35536, 57746, 95503, 115492, 191006, 230984, 382012, 461968, 764024, 1241539, 1528048, 2483078, 4966156, 9932312, 19864624]

約数ペア:

[(1, 19864624), (2, 9932312), (4, 4966156), (8, 2483078), (13, 1528048), (16, 1241539), (26, 764024), (43, 461968), (52, 382012), (86, 230984), (104, 191006), (172, 115492), (208, 95503), (344, 57746), (559, 35536), (688, 28873), (1118, 17768), (2221, 8944), (2236, 8884), (4442, 4472)]