28121205

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{2503}}^1$

素因数の和:2625

約数の個数: 32

約数和(自身を含む): 51922944

約数和(自身を除く): 23801739

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 107, 321, 535, 749, 1605, 2247, 2503, 3745, 7509, 11235, 12515, 17521, 37545, 52563, 87605, 262815, 267821, 803463, 1339105, 1874747, 4017315, 5624241, 9373735, 28121205]

約数ペア:

[(1, 28121205), (3, 9373735), (5, 5624241), (7, 4017315), (15, 1874747), (21, 1339105), (35, 803463), (105, 267821), (107, 262815), (321, 87605), (535, 52563), (749, 37545), (1605, 17521), (2247, 12515), (2503, 11235), (3745, 7509)]