20278328

素因数分解:

$2^3\times 7^1\times {\mathrm{257}}^1\times {\mathrm{1409}}^1$

素因数の和:1679

約数の個数: 32

約数和(自身を含む): 43653600

約数和(自身を除く): 23375272

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 257, 514, 1028, 1409, 1799, 2056, 2818, 3598, 5636, 7196, 9863, 11272, 14392, 19726, 39452, 78904, 362113, 724226, 1448452, 2534791, 2896904, 5069582, 10139164, 20278328]

約数ペア:

[(1, 20278328), (2, 10139164), (4, 5069582), (7, 2896904), (8, 2534791), (14, 1448452), (28, 724226), (56, 362113), (257, 78904), (514, 39452), (1028, 19726), (1409, 14392), (1799, 11272), (2056, 9863), (2818, 7196), (3598, 5636)]