16399665

素因数分解:

$3^4\times 5^1\times {\mathrm{40493}}^1$

素因数の和:40510

約数の個数: 20

約数和(自身を含む): 29398644

約数和(自身を除く): 12998979

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 40493, 121479, 202465, 364437, 607395, 1093311, 1822185, 3279933, 5466555, 16399665]

約数ペア:

[(1, 16399665), (3, 5466555), (5, 3279933), (9, 1822185), (15, 1093311), (27, 607395), (45, 364437), (81, 202465), (135, 121479), (405, 40493)]