18669185

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{199}}^1\times {\mathrm{647}}^1$

素因数の和:880

約数の個数: 16

約数和(自身を含む): 23328000

約数和(自身を除く): 4658815

約数列:

[1, 5, 29, 145, 199, 647, 995, 3235, 5771, 18763, 28855, 93815, 128753, 643765, 3733837, 18669185]

約数ペア:

[(1, 18669185), (5, 3733837), (29, 643765), (145, 128753), (199, 93815), (647, 28855), (995, 18763), (3235, 5771)]