21385825

素因数分解:

$5^2\times {\mathrm{443}}^1\times {\mathrm{1931}}^1$

素因数の和:2384

約数の個数: 12

約数和(自身を含む): 26592048

約数和(自身を除く): 5206223

約数列:

[1, 5, 25, 443, 1931, 2215, 9655, 11075, 48275, 855433, 4277165, 21385825]

約数ペア:

[(1, 21385825), (5, 4277165), (25, 855433), (443, 48275), (1931, 11075), (2215, 9655)]