81857125

素因数分解:

$5^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{5503}}^1$

素因数の和:5542

約数の個数: 32

約数和(自身を含む): 123641856

約数和(自身を除く): 41784731

約数列:

[1, 5, 7, 17, 25, 35, 85, 119, 125, 175, 425, 595, 875, 2125, 2975, 5503, 14875, 27515, 38521, 93551, 137575, 192605, 467755, 654857, 687875, 963025, 2338775, 3274285, 4815125, 11693875, 16371425, 81857125]

約数ペア:

[(1, 81857125), (5, 16371425), (7, 11693875), (17, 4815125), (25, 3274285), (35, 2338775), (85, 963025), (119, 687875), (125, 654857), (175, 467755), (425, 192605), (595, 137575), (875, 93551), (2125, 38521), (2975, 27515), (5503, 14875)]