381388

素因数分解:

$2^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{257}}^1$

素因数の和:321

約数の個数: 24

約数和(自身を含む): 780192

約数和(自身を除く): 398804

約数列:

[1, 2, 4, 7, 14, 28, 53, 106, 212, 257, 371, 514, 742, 1028, 1484, 1799, 3598, 7196, 13621, 27242, 54484, 95347, 190694, 381388]

約数ペア:

[(1, 381388), (2, 190694), (4, 95347), (7, 54484), (14, 27242), (28, 13621), (53, 7196), (106, 3598), (212, 1799), (257, 1484), (371, 1028), (514, 742)]