81511984

素因数分解:

$2^4\times {\mathrm{241}}^1\times {\mathrm{21139}}^1$

素因数の和:21388

約数の個数: 20

約数和(自身を含む): 158592280

約数和(自身を除く): 77080296

約数列:

[1, 2, 4, 8, 16, 241, 482, 964, 1928, 3856, 21139, 42278, 84556, 169112, 338224, 5094499, 10188998, 20377996, 40755992, 81511984]

約数ペア:

[(1, 81511984), (2, 40755992), (4, 20377996), (8, 10188998), (16, 5094499), (241, 338224), (482, 169112), (964, 84556), (1928, 42278), (3856, 21139)]