19690640

素因数分解:

$2^4\times 5^1\times {\mathrm{246133}}^1$

素因数の和:246146

約数の個数: 20

約数和(自身を含む): 45780924

約数和(自身を除く): 26090284

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 246133, 492266, 984532, 1230665, 1969064, 2461330, 3938128, 4922660, 9845320, 19690640]

約数ペア:

[(1, 19690640), (2, 9845320), (4, 4922660), (5, 3938128), (8, 2461330), (10, 1969064), (16, 1230665), (20, 984532), (40, 492266), (80, 246133)]