21081555

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{42589}}^1$

素因数の和:42611

約数の個数: 24

約数和(自身を含む): 39864240

約数和(自身を除く): 18782685

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 165, 495, 42589, 127767, 212945, 383301, 468479, 638835, 1405437, 1916505, 2342395, 4216311, 7027185, 21081555]

約数ペア:

[(1, 21081555), (3, 7027185), (5, 4216311), (9, 2342395), (11, 1916505), (15, 1405437), (33, 638835), (45, 468479), (55, 383301), (99, 212945), (165, 127767), (495, 42589)]