20980756

素因数分解:

$2^2\times {\mathrm{109}}^1\times {\mathrm{48121}}^1$

素因数の和:48234

約数の個数: 12

約数和(自身を含む): 37053940

約数和(自身を除く): 16073184

約数列:

[1, 2, 4, 109, 218, 436, 48121, 96242, 192484, 5245189, 10490378, 20980756]

約数ペア:

[(1, 20980756), (2, 10490378), (4, 5245189), (109, 192484), (218, 96242), (436, 48121)]