16785891

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{109}}^1\times {\mathrm{241}}^1$

素因数の和:427

約数の個数: 24

約数和(自身を含む): 24916320

約数和(自身を除く): 8130429

約数列:

[1, 3, 9, 71, 109, 213, 241, 327, 639, 723, 981, 2169, 7739, 17111, 23217, 26269, 51333, 69651, 78807, 153999, 236421, 1865099, 5595297, 16785891]

約数ペア:

[(1, 16785891), (3, 5595297), (9, 1865099), (71, 236421), (109, 153999), (213, 78807), (241, 69651), (327, 51333), (639, 26269), (723, 23217), (981, 17111), (2169, 7739)]