18766881

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{83}}^1\times {\mathrm{97}}^1$

素因数の和:230

約数の個数: 48

約数和(自身を含む): 32532864

約数和(自身を除く): 13765983

約数列:

[1, 3, 7, 9, 21, 37, 63, 83, 97, 111, 249, 259, 291, 333, 581, 679, 747, 777, 873, 1743, 2037, 2331, 3071, 3589, 5229, 6111, 8051, 9213, 10767, 21497, 24153, 25123, 27639, 32301, 56357, 64491, 72459, 75369, 169071, 193473, 226107, 297887, 507213, 893661, 2085209, 2680983, 6255627, 18766881]

約数ペア:

[(1, 18766881), (3, 6255627), (7, 2680983), (9, 2085209), (21, 893661), (37, 507213), (63, 297887), (83, 226107), (97, 193473), (111, 169071), (249, 75369), (259, 72459), (291, 64491), (333, 56357), (581, 32301), (679, 27639), (747, 25123), (777, 24153), (873, 21497), (1743, 10767), (2037, 9213), (2331, 8051), (3071, 6111), (3589, 5229)]