354220

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{199}}^1$

素因数の和:297

約数の個数: 24

約数和(自身を含む): 756000

約数和(自身を除く): 401780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 199, 356, 398, 445, 796, 890, 995, 1780, 1990, 3980, 17711, 35422, 70844, 88555, 177110, 354220]

約数ペア:

[(1, 354220), (2, 177110), (4, 88555), (5, 70844), (10, 35422), (20, 17711), (89, 3980), (178, 1990), (199, 1780), (356, 995), (398, 890), (445, 796)]