20770984

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{199721}}^1$

素因数の和:199740

約数の個数: 16

約数和(自身を含む): 41941620

約数和(自身を除く): 21170636

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 199721, 399442, 798884, 1597768, 2596373, 5192746, 10385492, 20770984]

約数ペア:

[(1, 20770984), (2, 10385492), (4, 5192746), (8, 2596373), (13, 1597768), (26, 798884), (52, 399442), (104, 199721)]