209249209

素因数分解:

${\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{173}}^1\times {\mathrm{421}}^1$

素因数の和:637

約数の個数: 24

約数和(自身を含む): 241871832

約数和(自身を除く): 32622623

約数列:

[1, 13, 17, 169, 173, 221, 421, 2249, 2873, 2941, 5473, 7157, 29237, 38233, 71149, 72833, 93041, 497029, 946829, 1209533, 1238161, 12308777, 16096093, 209249209]

約数ペア:

[(1, 209249209), (13, 16096093), (17, 12308777), (169, 1238161), (173, 1209533), (221, 946829), (421, 497029), (2249, 93041), (2873, 72833), (2941, 71149), (5473, 38233), (7157, 29237)]