19911184

素因数分解:

$2^4\times {\mathrm{197}}^1\times {\mathrm{6317}}^1$

素因数の和:6522

約数の個数: 20

約数和(自身を含む): 38779884

約数和(自身を除く): 18868700

約数列:

[1, 2, 4, 8, 16, 197, 394, 788, 1576, 3152, 6317, 12634, 25268, 50536, 101072, 1244449, 2488898, 4977796, 9955592, 19911184]

約数ペア:

[(1, 19911184), (2, 9955592), (4, 4977796), (8, 2488898), (16, 1244449), (197, 101072), (394, 50536), (788, 25268), (1576, 12634), (3152, 6317)]