81051560

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47123}}^1$

素因数の和:47177

約数の個数: 32

約数和(自身を含む): 186611040

約数和(自身を除く): 105559480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 47123, 94246, 188492, 235615, 376984, 471230, 942460, 1884920, 2026289, 4052578, 8105156, 10131445, 16210312, 20262890, 40525780, 81051560]

約数ペア:

[(1, 81051560), (2, 40525780), (4, 20262890), (5, 16210312), (8, 10131445), (10, 8105156), (20, 4052578), (40, 2026289), (43, 1884920), (86, 942460), (172, 471230), (215, 376984), (344, 235615), (430, 188492), (860, 94246), (1720, 47123)]