28412680

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{16519}}^1$

素因数の和:16573

約数の個数: 32

約数和(自身を含む): 65419200

約数和(自身を除く): 37006520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 16519, 33038, 66076, 82595, 132152, 165190, 330380, 660760, 710317, 1420634, 2841268, 3551585, 5682536, 7103170, 14206340, 28412680]

約数ペア:

[(1, 28412680), (2, 14206340), (4, 7103170), (5, 5682536), (8, 3551585), (10, 2841268), (20, 1420634), (40, 710317), (43, 660760), (86, 330380), (172, 165190), (215, 132152), (344, 82595), (430, 66076), (860, 33038), (1720, 16519)]