18786872

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{4201}}^1$

素因数の和:4263

約数の個数: 32

約数和(自身を含む): 38826480

約数和(自身を除く): 20039608

約数列:

[1, 2, 4, 8, 13, 26, 43, 52, 86, 104, 172, 344, 559, 1118, 2236, 4201, 4472, 8402, 16804, 33608, 54613, 109226, 180643, 218452, 361286, 436904, 722572, 1445144, 2348359, 4696718, 9393436, 18786872]

約数ペア:

[(1, 18786872), (2, 9393436), (4, 4696718), (8, 2348359), (13, 1445144), (26, 722572), (43, 436904), (52, 361286), (86, 218452), (104, 180643), (172, 109226), (344, 54613), (559, 33608), (1118, 16804), (2236, 8402), (4201, 4472)]