81271521

素因数分解:

$3^2\times {\mathrm{113}}^1\times {\mathrm{157}}^1\times {\mathrm{509}}^1$

素因数の和:785

約数の個数: 24

約数和(自身を含む): 119419560

約数和(自身を除く): 38148039

約数列:

[1, 3, 9, 113, 157, 339, 471, 509, 1017, 1413, 1527, 4581, 17741, 53223, 57517, 79913, 159669, 172551, 239739, 517653, 719217, 9030169, 27090507, 81271521]

約数ペア:

[(1, 81271521), (3, 27090507), (9, 9030169), (113, 719217), (157, 517653), (339, 239739), (471, 172551), (509, 159669), (1017, 79913), (1413, 57517), (1527, 53223), (4581, 17741)]