21081849

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{577}}^1\times {\mathrm{641}}^1$

素因数の和:1240

約数の個数: 16

約数和(自身を含む): 29686080

約数和(自身を除く): 8604231

約数列:

[1, 3, 19, 57, 577, 641, 1731, 1923, 10963, 12179, 32889, 36537, 369857, 1109571, 7027283, 21081849]

約数ペア:

[(1, 21081849), (3, 7027283), (19, 1109571), (57, 369857), (577, 36537), (641, 32889), (1731, 12179), (1923, 10963)]