28687412

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{42437}}^1$

素因数の和:42467

約数の個数: 18

約数和(自身を含む): 54363078

約数和(自身を除く): 25675666

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 42437, 84874, 169748, 551681, 1103362, 2206724, 7171853, 14343706, 28687412]

約数ペア:

[(1, 28687412), (2, 14343706), (4, 7171853), (13, 2206724), (26, 1103362), (52, 551681), (169, 169748), (338, 84874), (676, 42437)]