408878841

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{353}}^1\times {\mathrm{2903}}^1$

素因数の和:3285

約数の個数: 32

約数和(自身を含む): 657930240

約数和(自身を除く): 249051399

約数列:

[1, 3, 7, 19, 21, 57, 133, 353, 399, 1059, 2471, 2903, 6707, 7413, 8709, 20121, 20321, 46949, 55157, 60963, 140847, 165471, 386099, 1024759, 1158297, 3074277, 7173313, 19470421, 21519939, 58411263, 136292947, 408878841]

約数ペア:

[(1, 408878841), (3, 136292947), (7, 58411263), (19, 21519939), (21, 19470421), (57, 7173313), (133, 3074277), (353, 1158297), (399, 1024759), (1059, 386099), (2471, 165471), (2903, 140847), (6707, 60963), (7413, 55157), (8709, 46949), (20121, 20321)]