21131054

素因数分解:

$2^1\times 7^2\times {\mathrm{257}}^1\times {\mathrm{839}}^1$

素因数の和:1112

約数の個数: 24

約数和(自身を含む): 37059120

約数和(自身を除く): 15928066

約数列:

[1, 2, 7, 14, 49, 98, 257, 514, 839, 1678, 1799, 3598, 5873, 11746, 12593, 25186, 41111, 82222, 215623, 431246, 1509361, 3018722, 10565527, 21131054]

約数ペア:

[(1, 21131054), (2, 10565527), (7, 3018722), (14, 1509361), (49, 431246), (98, 215623), (257, 82222), (514, 41111), (839, 25186), (1678, 12593), (1799, 11746), (3598, 5873)]