80940700

素因数分解:

$2^2\times 5^2\times {\mathrm{809407}}^1$

素因数の和:809421

約数の個数: 18

約数和(自身を含む): 175641536

約数和(自身を除く): 94700836

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 809407, 1618814, 3237628, 4047035, 8094070, 16188140, 20235175, 40470350, 80940700]

約数ペア:

[(1, 80940700), (2, 40470350), (4, 20235175), (5, 16188140), (10, 8094070), (20, 4047035), (25, 3237628), (50, 1618814), (100, 809407)]