80811520

素因数分解:

$2^9\times 5^1\times {\mathrm{31567}}^1$

素因数の和:31590

約数の個数: 40

約数和(自身を含む): 193764384

約数和(自身を除く): 112952864

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 31567, 63134, 126268, 157835, 252536, 315670, 505072, 631340, 1010144, 1262680, 2020288, 2525360, 4040576, 5050720, 8081152, 10101440, 16162304, 20202880, 40405760, 80811520]

約数ペア:

[(1, 80811520), (2, 40405760), (4, 20202880), (5, 16162304), (8, 10101440), (10, 8081152), (16, 5050720), (20, 4040576), (32, 2525360), (40, 2020288), (64, 1262680), (80, 1010144), (128, 631340), (160, 505072), (256, 315670), (320, 252536), (512, 157835), (640, 126268), (1280, 63134), (2560, 31567)]