20400550

素因数分解:

$2^1\times 5^2\times {\mathrm{408011}}^1$

素因数の和:408023

約数の個数: 12

約数和(自身を含む): 37945116

約数和(自身を除く): 17544566

約数列:

[1, 2, 5, 10, 25, 50, 408011, 816022, 2040055, 4080110, 10200275, 20400550]

約数ペア:

[(1, 20400550), (2, 10200275), (5, 4080110), (10, 2040055), (25, 816022), (50, 408011)]