81171394

素因数分解:

$2^1\times {\mathrm{79}}^1\times {\mathrm{257}}^1\times {\mathrm{1999}}^1$

素因数の和:2337

約数の個数: 16

約数和(自身を含む): 123840000

約数和(自身を除く): 42668606

約数列:

[1, 2, 79, 158, 257, 514, 1999, 3998, 20303, 40606, 157921, 315842, 513743, 1027486, 40585697, 81171394]

約数ペア:

[(1, 81171394), (2, 40585697), (79, 1027486), (158, 513743), (257, 315842), (514, 157921), (1999, 40606), (3998, 20303)]