20819187

素因数分解:

$3^4\times {\mathrm{29}}^1\times {\mathrm{8863}}^1$

素因数の和:8904

約数の個数: 20

約数和(自身を含む): 32176320

約数和(自身を除く): 11357133

約数列:

[1, 3, 9, 27, 29, 81, 87, 261, 783, 2349, 8863, 26589, 79767, 239301, 257027, 717903, 771081, 2313243, 6939729, 20819187]

約数ペア:

[(1, 20819187), (3, 6939729), (9, 2313243), (27, 771081), (29, 717903), (81, 257027), (87, 239301), (261, 79767), (783, 26589), (2349, 8863)]