20553309

素因数分解:

$3^2\times 7^1\times {\mathrm{107}}^1\times {\mathrm{3049}}^1$

素因数の和:3169

約数の個数: 24

約数和(自身を含む): 34257600

約数和(自身を除く): 13704291

約数列:

[1, 3, 7, 9, 21, 63, 107, 321, 749, 963, 2247, 3049, 6741, 9147, 21343, 27441, 64029, 192087, 326243, 978729, 2283701, 2936187, 6851103, 20553309]

約数ペア:

[(1, 20553309), (3, 6851103), (7, 2936187), (9, 2283701), (21, 978729), (63, 326243), (107, 192087), (321, 64029), (749, 27441), (963, 21343), (2247, 9147), (3049, 6741)]