18815719

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{4481}}^1$

素因数の和:4530

約数の個数: 16

約数和(自身を含む): 22589280

約数和(自身を除く): 3773561

約数列:

[1, 13, 17, 19, 221, 247, 323, 4199, 4481, 58253, 76177, 85139, 990301, 1106807, 1447363, 18815719]

約数ペア:

[(1, 18815719), (13, 1447363), (17, 1106807), (19, 990301), (221, 85139), (247, 76177), (323, 58253), (4199, 4481)]