18256399

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{647}}^1$

素因数の和:822

約数の個数: 16

約数和(自身を含む): 21772800

約数和(自身を除く): 3516401

約数列:

[1, 7, 29, 139, 203, 647, 973, 4031, 4529, 18763, 28217, 89933, 131341, 629531, 2608057, 18256399]

約数ペア:

[(1, 18256399), (7, 2608057), (29, 629531), (139, 131341), (203, 89933), (647, 28217), (973, 18763), (4031, 4529)]