81239565

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{21407}}^1$

素因数の和:21449

約数の個数: 32

約数和(自身を含む): 147972096

約数和(自身を除く): 66732531

約数列:

[1, 3, 5, 11, 15, 23, 33, 55, 69, 115, 165, 253, 345, 759, 1265, 3795, 21407, 64221, 107035, 235477, 321105, 492361, 706431, 1177385, 1477083, 2461805, 3532155, 5415971, 7385415, 16247913, 27079855, 81239565]

約数ペア:

[(1, 81239565), (3, 27079855), (5, 16247913), (11, 7385415), (15, 5415971), (23, 3532155), (33, 2461805), (55, 1477083), (69, 1177385), (115, 706431), (165, 492361), (253, 321105), (345, 235477), (759, 107035), (1265, 64221), (3795, 21407)]