19781307

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{97}}^1$

素因数の和:209

約数の個数: 64

約数和(自身を含む): 36879360

約数和(自身を除く): 17098053

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 83, 91, 97, 117, 189, 249, 273, 291, 351, 581, 679, 747, 819, 873, 1079, 1261, 1743, 2037, 2241, 2457, 2619, 3237, 3783, 5229, 6111, 7553, 8051, 8827, 9711, 11349, 15687, 18333, 22659, 24153, 26481, 29133, 34047, 56357, 67977, 72459, 79443, 104663, 169071, 203931, 217377, 238329, 313989, 507213, 732641, 941967, 1521639, 2197923, 2825901, 6593769, 19781307]

約数ペア:

[(1, 19781307), (3, 6593769), (7, 2825901), (9, 2197923), (13, 1521639), (21, 941967), (27, 732641), (39, 507213), (63, 313989), (83, 238329), (91, 217377), (97, 203931), (117, 169071), (189, 104663), (249, 79443), (273, 72459), (291, 67977), (351, 56357), (581, 34047), (679, 29133), (747, 26481), (819, 24153), (873, 22659), (1079, 18333), (1261, 15687), (1743, 11349), (2037, 9711), (2241, 8827), (2457, 8051), (2619, 7553), (3237, 6111), (3783, 5229)]