28138791

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{409}}^1$

素因数の和:519

約数の個数: 32

約数和(自身を含む): 42508800

約数和(自身を除く): 14370009

約数列:

[1, 3, 17, 19, 51, 57, 71, 213, 323, 409, 969, 1207, 1227, 1349, 3621, 4047, 6953, 7771, 20859, 22933, 23313, 29039, 68799, 87117, 132107, 396321, 493663, 551741, 1480989, 1655223, 9379597, 28138791]

約数ペア:

[(1, 28138791), (3, 9379597), (17, 1655223), (19, 1480989), (51, 551741), (57, 493663), (71, 396321), (213, 132107), (323, 87117), (409, 68799), (969, 29039), (1207, 23313), (1227, 22933), (1349, 20859), (3621, 7771), (4047, 6953)]