16421360

素因数分解:

$2^4\times 5^1\times {\mathrm{205267}}^1$

素因数の和:205280

約数の個数: 20

約数和(自身を含む): 38179848

約数和(自身を除く): 21758488

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 205267, 410534, 821068, 1026335, 1642136, 2052670, 3284272, 4105340, 8210680, 16421360]

約数ペア:

[(1, 16421360), (2, 8210680), (4, 4105340), (5, 3284272), (8, 2052670), (10, 1642136), (16, 1026335), (20, 821068), (40, 410534), (80, 205267)]