689978

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{113}}^1$

素因数の和:229

約数の個数: 16

約数和(自身を含む): 1083456

約数和(自身を除く): 393478

約数列:

[1, 2, 43, 71, 86, 113, 142, 226, 3053, 4859, 6106, 8023, 9718, 16046, 344989, 689978]

約数ペア:

[(1, 689978), (2, 344989), (43, 16046), (71, 9718), (86, 8023), (113, 6106), (142, 4859), (226, 3053)]