21002177

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{307}}^1\times {\mathrm{337}}^1$

素因数の和:680

約数の個数: 16

約数和(自身を含む): 24984960

約数和(自身を除く): 3982783

約数列:

[1, 7, 29, 203, 307, 337, 2149, 2359, 8903, 9773, 62321, 68411, 103459, 724213, 3000311, 21002177]

約数ペア:

[(1, 21002177), (7, 3000311), (29, 724213), (203, 103459), (307, 68411), (337, 62321), (2149, 9773), (2359, 8903)]