81411160

素因数分解:

$2^3\times 5^1\times {\mathrm{823}}^1\times {\mathrm{2473}}^1$

素因数の和:3307

約数の個数: 32

約数和(自身を含む): 183471840

約数和(自身を除く): 102060680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 823, 1646, 2473, 3292, 4115, 4946, 6584, 8230, 9892, 12365, 16460, 19784, 24730, 32920, 49460, 98920, 2035279, 4070558, 8141116, 10176395, 16282232, 20352790, 40705580, 81411160]

約数ペア:

[(1, 81411160), (2, 40705580), (4, 20352790), (5, 16282232), (8, 10176395), (10, 8141116), (20, 4070558), (40, 2035279), (823, 98920), (1646, 49460), (2473, 32920), (3292, 24730), (4115, 19784), (4946, 16460), (6584, 12365), (8230, 9892)]