18920240

素因数分解:

$2^4\times 5^1\times {\mathrm{236503}}^1$

素因数の和:236516

約数の個数: 20

約数和(自身を含む): 43989744

約数和(自身を除く): 25069504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 236503, 473006, 946012, 1182515, 1892024, 2365030, 3784048, 4730060, 9460120, 18920240]

約数ペア:

[(1, 18920240), (2, 9460120), (4, 4730060), (5, 3784048), (8, 2365030), (10, 1892024), (16, 1182515), (20, 946012), (40, 473006), (80, 236503)]