1651280

素因数分解:

$2^4\times 5^1\times {\mathrm{20641}}^1$

素因数の和:20654

約数の個数: 20

約数和(自身を含む): 3839412

約数和(自身を除く): 2188132

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 20641, 41282, 82564, 103205, 165128, 206410, 330256, 412820, 825640, 1651280]

約数ペア:

[(1, 1651280), (2, 825640), (4, 412820), (5, 330256), (8, 206410), (10, 165128), (16, 103205), (20, 82564), (40, 41282), (80, 20641)]