217099640

素因数分解:

$2^3\times 5^1\times {\mathrm{839}}^1\times {\mathrm{6469}}^1$

素因数の和:7319

約数の個数: 32

約数和(自身を含む): 489132000

約数和(自身を除く): 272032360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 839, 1678, 3356, 4195, 6469, 6712, 8390, 12938, 16780, 25876, 32345, 33560, 51752, 64690, 129380, 258760, 5427491, 10854982, 21709964, 27137455, 43419928, 54274910, 108549820, 217099640]

約数ペア:

[(1, 217099640), (2, 108549820), (4, 54274910), (5, 43419928), (8, 27137455), (10, 21709964), (20, 10854982), (40, 5427491), (839, 258760), (1678, 129380), (3356, 64690), (4195, 51752), (6469, 33560), (6712, 32345), (8390, 25876), (12938, 16780)]