28350405

素因数分解:

$3^4\times 5^1\times {\mathrm{70001}}^1$

素因数の和:70018

約数の個数: 20

約数和(自身を含む): 50821452

約数和(自身を除く): 22471047

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 70001, 210003, 350005, 630009, 1050015, 1890027, 3150045, 5670081, 9450135, 28350405]

約数ペア:

[(1, 28350405), (3, 9450135), (5, 5670081), (9, 3150045), (15, 1890027), (27, 1050015), (45, 630009), (81, 350005), (135, 210003), (405, 70001)]