139352680

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{81019}}^1$

素因数の和:81073

約数の個数: 32

約数和(自身を含む): 320839200

約数和(自身を除く): 181486520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 81019, 162038, 324076, 405095, 648152, 810190, 1620380, 3240760, 3483817, 6967634, 13935268, 17419085, 27870536, 34838170, 69676340, 139352680]

約数ペア:

[(1, 139352680), (2, 69676340), (4, 34838170), (5, 27870536), (8, 17419085), (10, 13935268), (20, 6967634), (40, 3483817), (43, 3240760), (86, 1620380), (172, 810190), (215, 648152), (344, 405095), (430, 324076), (860, 162038), (1720, 81019)]