21054649

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{6359}}^1$

素因数の和:6420

約数の個数: 16

約数和(自身を含む): 26864640

約数和(自身を除く): 5809991

約数列:

[1, 7, 11, 43, 77, 301, 473, 3311, 6359, 44513, 69949, 273437, 489643, 1914059, 3007807, 21054649]

約数ペア:

[(1, 21054649), (7, 3007807), (11, 1914059), (43, 489643), (77, 273437), (301, 69949), (473, 44513), (3311, 6359)]