978001804

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{437389}}^1$

素因数の和:437449

約数の個数: 24

約数和(自身を含む): 1886025680

約数和(自身を除く): 908023876

約数列:

[1, 2, 4, 13, 26, 43, 52, 86, 172, 559, 1118, 2236, 437389, 874778, 1749556, 5686057, 11372114, 18807727, 22744228, 37615454, 75230908, 244500451, 489000902, 978001804]

約数ペア:

[(1, 978001804), (2, 489000902), (4, 244500451), (13, 75230908), (26, 37615454), (43, 22744228), (52, 18807727), (86, 11372114), (172, 5686057), (559, 1749556), (1118, 874778), (2236, 437389)]