19729897

素因数分解:

${\mathrm{11}}^2\times {\mathrm{41}}^2\times {\mathrm{97}}^1$

素因数の和:201

約数の個数: 18

約数和(自身を含む): 22457582

約数和(自身を除く): 2727685

約数列:

[1, 11, 41, 97, 121, 451, 1067, 1681, 3977, 4961, 11737, 18491, 43747, 163057, 203401, 481217, 1793627, 19729897]

約数ペア:

[(1, 19729897), (11, 1793627), (41, 481217), (97, 203401), (121, 163057), (451, 43747), (1067, 18491), (1681, 11737), (3977, 4961)]