257372668

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{399647}}^1$

素因数の和:399681

約数の個数: 24

約数和(自身を含む): 537126912

約数和(自身を除く): 279754244

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 322, 644, 399647, 799294, 1598588, 2797529, 5595058, 9191881, 11190116, 18383762, 36767524, 64343167, 128686334, 257372668]

約数ペア:

[(1, 257372668), (2, 128686334), (4, 64343167), (7, 36767524), (14, 18383762), (23, 11190116), (28, 9191881), (46, 5595058), (92, 2797529), (161, 1598588), (322, 799294), (644, 399647)]