21043040

素因数分解:

$2^5\times 5^1\times {\mathrm{131519}}^1$

素因数の和:131534

約数の個数: 24

約数和(自身を含む): 49714560

約数和(自身を除く): 28671520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 131519, 263038, 526076, 657595, 1052152, 1315190, 2104304, 2630380, 4208608, 5260760, 10521520, 21043040]

約数ペア:

[(1, 21043040), (2, 10521520), (4, 5260760), (5, 4208608), (8, 2630380), (10, 2104304), (16, 1315190), (20, 1052152), (32, 657595), (40, 526076), (80, 263038), (160, 131519)]