20930984

素因数分解:

$2^3\times {\mathrm{409}}^1\times {\mathrm{6397}}^1$

素因数の和:6812

約数の個数: 16

約数和(自身を含む): 39347700

約数和(自身を除く): 18416716

約数列:

[1, 2, 4, 8, 409, 818, 1636, 3272, 6397, 12794, 25588, 51176, 2616373, 5232746, 10465492, 20930984]

約数ペア:

[(1, 20930984), (2, 10465492), (4, 5232746), (8, 2616373), (409, 51176), (818, 25588), (1636, 12794), (3272, 6397)]