21059918

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{857}}^1\times {\mathrm{1117}}^1$

素因数の和:1987

約数の個数: 16

約数和(自身を含む): 34532784

約数和(自身を除く): 13472866

約数列:

[1, 2, 11, 22, 857, 1117, 1714, 2234, 9427, 12287, 18854, 24574, 957269, 1914538, 10529959, 21059918]

約数ペア:

[(1, 21059918), (2, 10529959), (11, 1914538), (22, 957269), (857, 24574), (1117, 18854), (1714, 12287), (2234, 9427)]