20868754

素因数分解:

$2^1\times {\mathrm{41}}^1\times {\mathrm{157}}^1\times {\mathrm{1621}}^1$

素因数の和:1821

約数の個数: 16

約数和(自身を含む): 32290776

約数和(自身を除く): 11422022

約数列:

[1, 2, 41, 82, 157, 314, 1621, 3242, 6437, 12874, 66461, 132922, 254497, 508994, 10434377, 20868754]

約数ペア:

[(1, 20868754), (2, 10434377), (41, 508994), (82, 254497), (157, 132922), (314, 66461), (1621, 12874), (3242, 6437)]