260415

素因数分解:

$3^4\times 5^1\times {\mathrm{643}}^1$

素因数の和:660

約数の個数: 20

約数和(自身を含む): 467544

約数和(自身を除く): 207129

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 643, 1929, 3215, 5787, 9645, 17361, 28935, 52083, 86805, 260415]

約数ペア:

[(1, 260415), (3, 86805), (5, 52083), (9, 28935), (15, 17361), (27, 9645), (45, 5787), (81, 3215), (135, 1929), (405, 643)]