text: i = 2 because we don 't  want to include  1 as a divisor.
code: i = 2 NEW_LINE while i * i <= number_1 : NEW_LINE INDENT if ( number_1 % i == 0 ) : NEW_LINE INDENT sum_divisor_1 = sum_divisor_1 + i NEW_LINE if ( i * i != number_1 ) : NEW_LINE INDENT sum_divisor_1 += number_1 // i NEW_LINE DEDENT DEDENT i = i + 1 NEW_LINE DEDENT if ( sum_divisor_1 > number_1 ) : NEW_LINE INDENT number_2 = sum_divisor_1 - 1 NEW_LINE sum_divisor_2 = 1 NEW_LINE j = 2 NEW_LINE while j * j <= number_2 : NEW_LINE INDENT if ( number_2 % j == 0 ) : NEW_LINE INDENT sum_divisor_2 += j NEW_LINE if ( j * j != number_2 ) : NEW_LINE INDENT sum_divisor_2 += number_2 // j NEW_LINE DEDENT DEDENT j = j + 1 NEW_LINE DEDENT if ( sum_divisor_2 == number_1 + 1 and number_1 <= n and number_2 <= n ) : NEW_LINE INDENT Set . append ( number_1 ) NEW_LINE Set . append ( number_2 ) NEW_LINE DEDENT DEDENT