20078876680

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{7070027}}^1$

素因数の和:7070109

約数の個数: 32

約数和(自身を含む): 45813781440

約数和(自身を除く): 25734904760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 7070027, 14140054, 28280108, 35350135, 56560216, 70700270, 141400540, 282801080, 501971917, 1003943834, 2007887668, 2509859585, 4015775336, 5019719170, 10039438340, 20078876680]

約数ペア:

[(1, 20078876680), (2, 10039438340), (4, 5019719170), (5, 4015775336), (8, 2509859585), (10, 2007887668), (20, 1003943834), (40, 501971917), (71, 282801080), (142, 141400540), (284, 70700270), (355, 56560216), (568, 35350135), (710, 28280108), (1420, 14140054), (2840, 7070027)]