81361160

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47303}}^1$

素因数の和:47357

約数の個数: 32

約数和(自身を含む): 187323840

約数和(自身を除く): 105962680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 47303, 94606, 189212, 236515, 378424, 473030, 946060, 1892120, 2034029, 4068058, 8136116, 10170145, 16272232, 20340290, 40680580, 81361160]

約数ペア:

[(1, 81361160), (2, 40680580), (4, 20340290), (5, 16272232), (8, 10170145), (10, 8136116), (20, 4068058), (40, 2034029), (43, 1892120), (86, 946060), (172, 473030), (215, 378424), (344, 236515), (430, 189212), (860, 94606), (1720, 47303)]