28560021

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{2309}}^1$

素因数の和:2369

約数の個数: 32

約数和(自身を含む): 47308800

約数和(自身を除く): 18748779

約数列:

[1, 3, 7, 19, 21, 31, 57, 93, 133, 217, 399, 589, 651, 1767, 2309, 4123, 6927, 12369, 16163, 43871, 48489, 71579, 131613, 214737, 307097, 501053, 921291, 1360001, 1503159, 4080003, 9520007, 28560021]

約数ペア:

[(1, 28560021), (3, 9520007), (7, 4080003), (19, 1503159), (21, 1360001), (31, 921291), (57, 501053), (93, 307097), (133, 214737), (217, 131613), (399, 71579), (589, 48489), (651, 43871), (1767, 16163), (2309, 12369), (4123, 6927)]