18728985

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{607}}^1$

素因数の和:654

約数の個数: 48

約数和(自身を含む): 34933248

約数和(自身を除く): 16204263

約数列:

[1, 3, 5, 11, 15, 17, 33, 51, 55, 85, 121, 165, 187, 255, 363, 561, 605, 607, 935, 1815, 1821, 2057, 2805, 3035, 6171, 6677, 9105, 10285, 10319, 20031, 30855, 30957, 33385, 51595, 73447, 100155, 113509, 154785, 220341, 340527, 367235, 567545, 1101705, 1248599, 1702635, 3745797, 6242995, 18728985]

約数ペア:

[(1, 18728985), (3, 6242995), (5, 3745797), (11, 1702635), (15, 1248599), (17, 1101705), (33, 567545), (51, 367235), (55, 340527), (85, 220341), (121, 154785), (165, 113509), (187, 100155), (255, 73447), (363, 51595), (561, 33385), (605, 30957), (607, 30855), (935, 20031), (1815, 10319), (1821, 10285), (2057, 9105), (2805, 6677), (3035, 6171)]