19805715

素因数分解:

$3^5\times 5^1\times {\mathrm{16301}}^1$

素因数の和:16321

約数の個数: 24

約数和(自身を含む): 35603568

約数和(自身を除く): 15797853

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 1215, 16301, 48903, 81505, 146709, 244515, 440127, 733545, 1320381, 2200635, 3961143, 6601905, 19805715]

約数ペア:

[(1, 19805715), (3, 6601905), (5, 3961143), (9, 2200635), (15, 1320381), (27, 733545), (45, 440127), (81, 244515), (135, 146709), (243, 81505), (405, 48903), (1215, 16301)]