257965518933

素因数分解:

$3^4\times {\mathrm{109}}^1\times {\mathrm{29217977}}^1$

素因数の和:29218098

約数の個数: 20

約数和(自身を含む): 388891287180

約数和(自身を除く): 130925768247

約数列:

[1, 3, 9, 27, 81, 109, 327, 981, 2943, 8829, 29217977, 87653931, 262961793, 788885379, 2366656137, 3184759493, 9554278479, 28662835437, 85988506311, 257965518933]

約数ペア:

[(1, 257965518933), (3, 85988506311), (9, 28662835437), (27, 9554278479), (81, 3184759493), (109, 2366656137), (327, 788885379), (981, 262961793), (2943, 87653931), (8829, 29217977)]