165745520

素因数分解:

$2^4\times 5^1\times {\mathrm{2071819}}^1$

素因数の和:2071832

約数の個数: 20

約数和(自身を含む): 385358520

約数和(自身を除く): 219613000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2071819, 4143638, 8287276, 10359095, 16574552, 20718190, 33149104, 41436380, 82872760, 165745520]

約数ペア:

[(1, 165745520), (2, 82872760), (4, 41436380), (5, 33149104), (8, 20718190), (10, 16574552), (16, 10359095), (20, 8287276), (40, 4143638), (80, 2071819)]