80839040

素因数分解:

$2^7\times 5^1\times {\mathrm{126311}}^1$

素因数の和:126330

約数の個数: 32

約数和(自身を含む): 193257360

約数和(自身を除く): 112418320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 126311, 252622, 505244, 631555, 1010488, 1263110, 2020976, 2526220, 4041952, 5052440, 8083904, 10104880, 16167808, 20209760, 40419520, 80839040]

約数ペア:

[(1, 80839040), (2, 40419520), (4, 20209760), (5, 16167808), (8, 10104880), (10, 8083904), (16, 5052440), (20, 4041952), (32, 2526220), (40, 2020976), (64, 1263110), (80, 1010488), (128, 631555), (160, 505244), (320, 252622), (640, 126311)]