19909395

素因数分解:

$3^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1$

素因数の和:178

約数の個数: 80

約数和(自身を含む): 40249440

約数和(自身を除く): 20340045

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 41, 45, 55, 81, 99, 109, 123, 135, 165, 205, 297, 327, 369, 405, 451, 495, 545, 615, 891, 981, 1107, 1199, 1353, 1485, 1635, 1845, 2255, 2943, 3321, 3597, 4059, 4455, 4469, 4905, 5535, 5995, 6765, 8829, 10791, 12177, 13407, 14715, 16605, 17985, 20295, 22345, 32373, 36531, 40221, 44145, 49159, 53955, 60885, 67035, 97119, 120663, 147477, 161865, 182655, 201105, 245795, 361989, 442431, 485595, 603315, 737385, 1327293, 1809945, 2212155, 3981879, 6636465, 19909395]

約数ペア:

[(1, 19909395), (3, 6636465), (5, 3981879), (9, 2212155), (11, 1809945), (15, 1327293), (27, 737385), (33, 603315), (41, 485595), (45, 442431), (55, 361989), (81, 245795), (99, 201105), (109, 182655), (123, 161865), (135, 147477), (165, 120663), (205, 97119), (297, 67035), (327, 60885), (369, 53955), (405, 49159), (451, 44145), (495, 40221), (545, 36531), (615, 32373), (891, 22345), (981, 20295), (1107, 17985), (1199, 16605), (1353, 14715), (1485, 13407), (1635, 12177), (1845, 10791), (2255, 8829), (2943, 6765), (3321, 5995), (3597, 5535), (4059, 4905), (4455, 4469)]