131387480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{469241}}^1$

素因数の和:469259

約数の個数: 32

約数和(自身を含む): 337854240

約数和(自身を除く): 206466760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 469241, 938482, 1876964, 2346205, 3284687, 3753928, 4692410, 6569374, 9384820, 13138748, 16423435, 18769640, 26277496, 32846870, 65693740, 131387480]

約数ペア:

[(1, 131387480), (2, 65693740), (4, 32846870), (5, 26277496), (7, 18769640), (8, 16423435), (10, 13138748), (14, 9384820), (20, 6569374), (28, 4692410), (35, 3753928), (40, 3284687), (56, 2346205), (70, 1876964), (140, 938482), (280, 469241)]