206560

素因数分解:

$2^5\times 5^1\times {\mathrm{1291}}^1$

素因数の和:1306

約数の個数: 24

約数和(自身を含む): 488376

約数和(自身を除く): 281816

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 1291, 2582, 5164, 6455, 10328, 12910, 20656, 25820, 41312, 51640, 103280, 206560]

約数ペア:

[(1, 206560), (2, 103280), (4, 51640), (5, 41312), (8, 25820), (10, 20656), (16, 12910), (20, 10328), (32, 6455), (40, 5164), (80, 2582), (160, 1291)]