20711125

素因数分解:

$5^3\times {\mathrm{223}}^1\times {\mathrm{743}}^1$

素因数の和:981

約数の個数: 16

約数和(自身を含む): 25998336

約数和(自身を除く): 5287211

約数列:

[1, 5, 25, 125, 223, 743, 1115, 3715, 5575, 18575, 27875, 92875, 165689, 828445, 4142225, 20711125]

約数ペア:

[(1, 20711125), (5, 4142225), (25, 828445), (125, 165689), (223, 92875), (743, 27875), (1115, 18575), (3715, 5575)]