20915757

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{127}}^1\times {\mathrm{631}}^1$

素因数の和:793

約数の個数: 24

約数和(自身を含む): 31549440

約数和(自身を除く): 10633683

約数列:

[1, 3, 9, 29, 87, 127, 261, 381, 631, 1143, 1893, 3683, 5679, 11049, 18299, 33147, 54897, 80137, 164691, 240411, 721233, 2323973, 6971919, 20915757]

約数ペア:

[(1, 20915757), (3, 6971919), (9, 2323973), (29, 721233), (87, 240411), (127, 164691), (261, 80137), (381, 54897), (631, 33147), (1143, 18299), (1893, 11049), (3683, 5679)]