639450243

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{1920271}}^1$

素因数の和:1920314

約数の個数: 12

約数和(自身を含む): 948614368

約数和(自身を除く): 309164125

約数列:

[1, 3, 9, 37, 111, 333, 1920271, 5760813, 17282439, 71050027, 213150081, 639450243]

約数ペア:

[(1, 639450243), (3, 213150081), (9, 71050027), (37, 17282439), (111, 5760813), (333, 1920271)]