399331388

素因数分解:

$2^2\times {\mathrm{4463}}^1\times {\mathrm{22369}}^1$

素因数の和:26836

約数の個数: 12

約数和(自身を含む): 699017760

約数和(自身を除く): 299686372

約数列:

[1, 2, 4, 4463, 8926, 17852, 22369, 44738, 89476, 99832847, 199665694, 399331388]

約数ペア:

[(1, 399331388), (2, 199665694), (4, 99832847), (4463, 89476), (8926, 44738), (17852, 22369)]