21000591351

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{137258767}}^1$

素因数の和:137258790

約数の個数: 12

約数和(自身を含む): 32118551712

約数和(自身を除く): 11117960361

約数列:

[1, 3, 9, 17, 51, 153, 137258767, 411776301, 1235328903, 2333399039, 7000197117, 21000591351]

約数ペア:

[(1, 21000591351), (3, 7000197117), (9, 2333399039), (17, 1235328903), (51, 411776301), (153, 137258767)]