21088360

素因数分解:

$2^3\times 5^1\times {\mathrm{527209}}^1$

素因数の和:527220

約数の個数: 16

約数和(自身を含む): 47448900

約数和(自身を除く): 26360540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 527209, 1054418, 2108836, 2636045, 4217672, 5272090, 10544180, 21088360]

約数ペア:

[(1, 21088360), (2, 10544180), (4, 5272090), (5, 4217672), (8, 2636045), (10, 2108836), (20, 1054418), (40, 527209)]