21922605

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{28657}}^1$

素因数の和:28685

約数の個数: 24

約数和(自身を含む): 40235832

約数和(自身を除く): 18313227

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 28657, 85971, 143285, 257913, 429855, 487169, 1289565, 1461507, 2435845, 4384521, 7307535, 21922605]

約数ペア:

[(1, 21922605), (3, 7307535), (5, 4384521), (9, 2435845), (15, 1461507), (17, 1289565), (45, 487169), (51, 429855), (85, 257913), (153, 143285), (255, 85971), (765, 28657)]