19742891

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1\times {\mathrm{613}}^1$

素因数の和:770

約数の個数: 16

約数和(自身を含む): 23341824

約数和(自身を除く): 3598933

約数列:

[1, 7, 43, 107, 301, 613, 749, 4291, 4601, 26359, 32207, 65591, 184513, 459137, 2820413, 19742891]

約数ペア:

[(1, 19742891), (7, 2820413), (43, 459137), (107, 184513), (301, 65591), (613, 32207), (749, 26359), (4291, 4601)]