409120

素因数分解:

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

素因数の和:2572

約数の個数: 24

約数和(自身を含む): 966924

約数和(自身を除く): 557804

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 2557, 5114, 10228, 12785, 20456, 25570, 40912, 51140, 81824, 102280, 204560, 409120]

約数ペア:

[(1, 409120), (2, 204560), (4, 102280), (5, 81824), (8, 51140), (10, 40912), (16, 25570), (20, 20456), (32, 12785), (40, 10228), (80, 5114), (160, 2557)]