90204560

素因数分解:

$2^4\times 5^1\times {\mathrm{1127557}}^1$

素因数の和:1127570

約数の個数: 20

約数和(自身を含む): 209725788

約数和(自身を除く): 119521228

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1127557, 2255114, 4510228, 5637785, 9020456, 11275570, 18040912, 22551140, 45102280, 90204560]

約数ペア:

[(1, 90204560), (2, 45102280), (4, 22551140), (5, 18040912), (8, 11275570), (10, 9020456), (16, 5637785), (20, 4510228), (40, 2255114), (80, 1127557)]