18904225

素因数分解:

$5^2\times {\mathrm{37}}^1\times {\mathrm{107}}^1\times {\mathrm{191}}^1$

素因数の和:345

約数の個数: 24

約数和(自身を含む): 24427008

約数和(自身を除く): 5522783

約数列:

[1, 5, 25, 37, 107, 185, 191, 535, 925, 955, 2675, 3959, 4775, 7067, 19795, 20437, 35335, 98975, 102185, 176675, 510925, 756169, 3780845, 18904225]

約数ペア:

[(1, 18904225), (5, 3780845), (25, 756169), (37, 510925), (107, 176675), (185, 102185), (191, 98975), (535, 35335), (925, 20437), (955, 19795), (2675, 7067), (3959, 4775)]