21289155

素因数分解:

$3^1\times 5^1\times {\mathrm{479}}^1\times {\mathrm{2963}}^1$

素因数の和:3450

約数の個数: 16

約数和(自身を含む): 34145280

約数和(自身を除く): 12856125

約数列:

[1, 3, 5, 15, 479, 1437, 2395, 2963, 7185, 8889, 14815, 44445, 1419277, 4257831, 7096385, 21289155]

約数ペア:

[(1, 21289155), (3, 7096385), (5, 4257831), (15, 1419277), (479, 44445), (1437, 14815), (2395, 8889), (2963, 7185)]