28785519

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{233}}^1$

素因数の和:336

約数の個数: 48

約数和(自身を含む): 49937472

約数和(自身を除く): 21151953

約数列:

[1, 3, 7, 9, 21, 37, 53, 63, 111, 159, 233, 259, 333, 371, 477, 699, 777, 1113, 1631, 1961, 2097, 2331, 3339, 4893, 5883, 8621, 12349, 13727, 14679, 17649, 25863, 37047, 41181, 60347, 77589, 86443, 111141, 123543, 181041, 259329, 456913, 543123, 777987, 1370739, 3198391, 4112217, 9595173, 28785519]

約数ペア:

[(1, 28785519), (3, 9595173), (7, 4112217), (9, 3198391), (21, 1370739), (37, 777987), (53, 543123), (63, 456913), (111, 259329), (159, 181041), (233, 123543), (259, 111141), (333, 86443), (371, 77589), (477, 60347), (699, 41181), (777, 37047), (1113, 25863), (1631, 17649), (1961, 14679), (2097, 13727), (2331, 12349), (3339, 8621), (4893, 5883)]