90201520

素因数分解:

$2^4\times 5^1\times {\mathrm{641}}^1\times {\mathrm{1759}}^1$

素因数の和:2413

約数の個数: 40

約数和(自身を含む): 210165120

約数和(自身を除く): 119963600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 641, 1282, 1759, 2564, 3205, 3518, 5128, 6410, 7036, 8795, 10256, 12820, 14072, 17590, 25640, 28144, 35180, 51280, 70360, 140720, 1127519, 2255038, 4510076, 5637595, 9020152, 11275190, 18040304, 22550380, 45100760, 90201520]

約数ペア:

[(1, 90201520), (2, 45100760), (4, 22550380), (5, 18040304), (8, 11275190), (10, 9020152), (16, 5637595), (20, 4510076), (40, 2255038), (80, 1127519), (641, 140720), (1282, 70360), (1759, 51280), (2564, 35180), (3205, 28144), (3518, 25640), (5128, 17590), (6410, 14072), (7036, 12820), (8795, 10256)]