257181756

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{1648601}}^1$

素因数の和:1648621

約数の個数: 24

約数和(自身を含む): 646251984

約数和(自身を除く): 389070228

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 1648601, 3297202, 4945803, 6594404, 9891606, 19783212, 21431813, 42863626, 64295439, 85727252, 128590878, 257181756]

約数ペア:

[(1, 257181756), (2, 128590878), (3, 85727252), (4, 64295439), (6, 42863626), (12, 21431813), (13, 19783212), (26, 9891606), (39, 6594404), (52, 4945803), (78, 3297202), (156, 1648601)]