204560

素因数分解:

$2^4\times 5^1\times {\mathrm{2557}}^1$

素因数の和:2570

約数の個数: 20

約数和(自身を含む): 475788

約数和(自身を除く): 271228

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2557, 5114, 10228, 12785, 20456, 25570, 40912, 51140, 102280, 204560]

約数ペア:

[(1, 204560), (2, 102280), (4, 51140), (5, 40912), (8, 25570), (10, 20456), (16, 12785), (20, 10228), (40, 5114), (80, 2557)]