21000398507

素因数分解:

${\mathrm{11}}^1\times {\mathrm{677}}^1\times {\mathrm{2819981}}^1$

素因数の和:2820669

約数の個数: 8

約数和(自身を含む): 22943373552

約数和(自身を除く): 1942975045

約数列:

[1, 11, 677, 7447, 2819981, 31019791, 1909127137, 21000398507]

約数ペア:

[(1, 21000398507), (11, 1909127137), (677, 31019791), (7447, 2819981)]