18505520

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{1237}}^1$

素因数の和:1278

約数の個数: 80

約数和(自身を含む): 49737888

約数和(自身を除く): 31232368

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 17, 20, 22, 34, 40, 44, 55, 68, 80, 85, 88, 110, 136, 170, 176, 187, 220, 272, 340, 374, 440, 680, 748, 880, 935, 1237, 1360, 1496, 1870, 2474, 2992, 3740, 4948, 6185, 7480, 9896, 12370, 13607, 14960, 19792, 21029, 24740, 27214, 42058, 49480, 54428, 68035, 84116, 98960, 105145, 108856, 136070, 168232, 210290, 217712, 231319, 272140, 336464, 420580, 462638, 544280, 841160, 925276, 1088560, 1156595, 1682320, 1850552, 2313190, 3701104, 4626380, 9252760, 18505520]

約数ペア:

[(1, 18505520), (2, 9252760), (4, 4626380), (5, 3701104), (8, 2313190), (10, 1850552), (11, 1682320), (16, 1156595), (17, 1088560), (20, 925276), (22, 841160), (34, 544280), (40, 462638), (44, 420580), (55, 336464), (68, 272140), (80, 231319), (85, 217712), (88, 210290), (110, 168232), (136, 136070), (170, 108856), (176, 105145), (187, 98960), (220, 84116), (272, 68035), (340, 54428), (374, 49480), (440, 42058), (680, 27214), (748, 24740), (880, 21029), (935, 19792), (1237, 14960), (1360, 13607), (1496, 12370), (1870, 9896), (2474, 7480), (2992, 6185), (3740, 4948)]