221379278

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{67783}}^1$

素因数の和:67879

約数の個数: 16

約数和(自身を含む): 351392256

約数和(自身を除く): 130012978

約数列:

[1, 2, 23, 46, 71, 142, 1633, 3266, 67783, 135566, 1559009, 3118018, 4812593, 9625186, 110689639, 221379278]

約数ペア:

[(1, 221379278), (2, 110689639), (23, 9625186), (46, 4812593), (71, 3118018), (142, 1559009), (1633, 135566), (3266, 67783)]