20980760

素因数分解:

$2^3\times 5^1\times {\mathrm{524519}}^1$

素因数の和:524530

約数の個数: 16

約数和(自身を含む): 47206800

約数和(自身を除く): 26226040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 524519, 1049038, 2098076, 2622595, 4196152, 5245190, 10490380, 20980760]

約数ペア:

[(1, 20980760), (2, 10490380), (4, 5245190), (5, 4196152), (8, 2622595), (10, 2098076), (20, 1049038), (40, 524519)]