278350660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1988219}}^1$

素因数の和:1988235

約数の個数: 24

約数和(自身を含む): 668041920

約数和(自身を除く): 389691260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1988219, 3976438, 7952876, 9941095, 13917533, 19882190, 27835066, 39764380, 55670132, 69587665, 139175330, 278350660]

約数ペア:

[(1, 278350660), (2, 139175330), (4, 69587665), (5, 55670132), (7, 39764380), (10, 27835066), (14, 19882190), (20, 13917533), (28, 9941095), (35, 7952876), (70, 3976438), (140, 1988219)]