66679240

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{38767}}^1$

素因数の和:38821

約数の個数: 32

約数和(自身を含む): 153521280

約数和(自身を除く): 86842040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 38767, 77534, 155068, 193835, 310136, 387670, 775340, 1550680, 1666981, 3333962, 6667924, 8334905, 13335848, 16669810, 33339620, 66679240]

約数ペア:

[(1, 66679240), (2, 33339620), (4, 16669810), (5, 13335848), (8, 8334905), (10, 6667924), (20, 3333962), (40, 1666981), (43, 1550680), (86, 775340), (172, 387670), (215, 310136), (344, 193835), (430, 155068), (860, 77534), (1720, 38767)]