19905356

素因数分解:

$2^2\times {\mathrm{139}}^1\times {\mathrm{35801}}^1$

素因数の和:35944

約数の個数: 12

約数和(自身を含む): 35085960

約数和(自身を除く): 15180604

約数列:

[1, 2, 4, 139, 278, 556, 35801, 71602, 143204, 4976339, 9952678, 19905356]

約数ペア:

[(1, 19905356), (2, 9952678), (4, 4976339), (139, 143204), (278, 71602), (556, 35801)]