21217250

素因数分解:

$2^1\times 5^3\times {\mathrm{84869}}^1$

素因数の和:84886

約数の個数: 16

約数和(自身を含む): 39719160

約数和(自身を除く): 18501910

約数列:

[1, 2, 5, 10, 25, 50, 125, 250, 84869, 169738, 424345, 848690, 2121725, 4243450, 10608625, 21217250]

約数ペア:

[(1, 21217250), (2, 10608625), (5, 4243450), (10, 2121725), (25, 848690), (50, 424345), (125, 169738), (250, 84869)]