18894759

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{593}}^1$

素因数の和:671

約数の個数: 32

約数和(自身を含む): 29272320

約数和(自身を除く): 10377561

約数列:

[1, 3, 13, 19, 39, 43, 57, 129, 247, 559, 593, 741, 817, 1677, 1779, 2451, 7709, 10621, 11267, 23127, 25499, 31863, 33801, 76497, 146471, 331487, 439413, 484481, 994461, 1453443, 6298253, 18894759]

約数ペア:

[(1, 18894759), (3, 6298253), (13, 1453443), (19, 994461), (39, 484481), (43, 439413), (57, 331487), (129, 146471), (247, 76497), (559, 33801), (593, 31863), (741, 25499), (817, 23127), (1677, 11267), (1779, 10621), (2451, 7709)]