21253425

素因数分解:

$3^1\times 5^2\times {\mathrm{251}}^1\times {\mathrm{1129}}^1$

素因数の和:1393

約数の個数: 24

約数和(自身を含む): 35310240

約数和(自身を除く): 14056815

約数列:

[1, 3, 5, 15, 25, 75, 251, 753, 1129, 1255, 3387, 3765, 5645, 6275, 16935, 18825, 28225, 84675, 283379, 850137, 1416895, 4250685, 7084475, 21253425]

約数ペア:

[(1, 21253425), (3, 7084475), (5, 4250685), (15, 1416895), (25, 850137), (75, 283379), (251, 84675), (753, 28225), (1129, 18825), (1255, 16935), (3387, 6275), (3765, 5645)]