20928616

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{83}}^1\times {\mathrm{733}}^1$

素因数の和:865

約数の個数: 32

約数和(自身を含む): 40692960

約数和(自身を除く): 19764344

約数列:

[1, 2, 4, 8, 43, 83, 86, 166, 172, 332, 344, 664, 733, 1466, 2932, 3569, 5864, 7138, 14276, 28552, 31519, 60839, 63038, 121678, 126076, 243356, 252152, 486712, 2616077, 5232154, 10464308, 20928616]

約数ペア:

[(1, 20928616), (2, 10464308), (4, 5232154), (8, 2616077), (43, 486712), (83, 252152), (86, 243356), (166, 126076), (172, 121678), (332, 63038), (344, 60839), (664, 31519), (733, 28552), (1466, 14276), (2932, 7138), (3569, 5864)]