19518994

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{80657}}^1$

素因数の和:80681

約数の個数: 12

約数和(自身を含む): 32182542

約数和(自身を除く): 12663548

約数列:

[1, 2, 11, 22, 121, 242, 80657, 161314, 887227, 1774454, 9759497, 19518994]

約数ペア:

[(1, 19518994), (2, 9759497), (11, 1774454), (22, 887227), (121, 161314), (242, 80657)]