80027720

素因数分解:

$2^3\times 5^1\times {\mathrm{2000693}}^1$

素因数の和:2000704

約数の個数: 16

約数和(自身を含む): 180062460

約数和(自身を除く): 100034740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2000693, 4001386, 8002772, 10003465, 16005544, 20006930, 40013860, 80027720]

約数ペア:

[(1, 80027720), (2, 40013860), (4, 20006930), (5, 16005544), (8, 10003465), (10, 8002772), (20, 4001386), (40, 2000693)]