21627405

素因数分解:

$3^4\times 5^1\times {\mathrm{53401}}^1$

素因数の和:53418

約数の個数: 20

約数和(自身を含む): 38769852

約数和(自身を除く): 17142447

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 53401, 160203, 267005, 480609, 801015, 1441827, 2403045, 4325481, 7209135, 21627405]

約数ペア:

[(1, 21627405), (3, 7209135), (5, 4325481), (9, 2403045), (15, 1441827), (27, 801015), (45, 480609), (81, 267005), (135, 160203), (405, 53401)]