399961492

素因数分解:

$2^2\times 7^1\times {\mathrm{181}}^1\times {\mathrm{78919}}^1$

素因数の和:79111

約数の個数: 24

約数和(自身を含む): 804352640

約数和(自身を除く): 404391148

約数列:

[1, 2, 4, 7, 14, 28, 181, 362, 724, 1267, 2534, 5068, 78919, 157838, 315676, 552433, 1104866, 2209732, 14284339, 28568678, 57137356, 99990373, 199980746, 399961492]

約数ペア:

[(1, 399961492), (2, 199980746), (4, 99990373), (7, 57137356), (14, 28568678), (28, 14284339), (181, 2209732), (362, 1104866), (724, 552433), (1267, 315676), (2534, 157838), (5068, 78919)]