28788207

素因数分解:

$3^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1\times {\mathrm{211}}^1$

素因数の和:383

約数の個数: 32

約数和(自身を含む): 45181440

約数和(自身を除く): 16393233

約数列:

[1, 3, 7, 21, 73, 89, 211, 219, 267, 511, 623, 633, 1477, 1533, 1869, 4431, 6497, 15403, 18779, 19491, 45479, 46209, 56337, 107821, 131453, 136437, 323463, 394359, 1370867, 4112601, 9596069, 28788207]

約数ペア:

[(1, 28788207), (3, 9596069), (7, 4112601), (21, 1370867), (73, 394359), (89, 323463), (211, 136437), (219, 131453), (267, 107821), (511, 56337), (623, 46209), (633, 45479), (1477, 19491), (1533, 18779), (1869, 15403), (4431, 6497)]