20990984

素因数分解:

$2^3\times 7^1\times {\mathrm{374839}}^1$

素因数の和:374852

約数の個数: 16

約数和(自身を含む): 44980800

約数和(自身を除く): 23989816

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 374839, 749678, 1499356, 2623873, 2998712, 5247746, 10495492, 20990984]

約数ペア:

[(1, 20990984), (2, 10495492), (4, 5247746), (7, 2998712), (8, 2623873), (14, 1499356), (28, 749678), (56, 374839)]