19398220

素因数分解:

$2^2\times 5^1\times {\mathrm{969911}}^1$

素因数の和:969920

約数の個数: 12

約数和(自身を含む): 40736304

約数和(自身を除く): 21338084

約数列:

[1, 2, 4, 5, 10, 20, 969911, 1939822, 3879644, 4849555, 9699110, 19398220]

約数ペア:

[(1, 19398220), (2, 9699110), (4, 4849555), (5, 3879644), (10, 1939822), (20, 969911)]